Electric pipettor for biological experiment

Abstract

The utility model discloses an electric pipettor for a biological experiment, which comprises an electric pipettor body, one side of the bottom of the electric pipettor body is fixedly connected with a connecting pipe, one side of the connecting pipe is fixedly connected with two bases, and the two bases are symmetrically arranged. After an external transfer pipette is connected with the connecting pipe at the bottom of the electric pipette body, the first screw is rotated anticlockwise and loosened, the moving bar is moved downwards to the required height by matching with the U-shaped limiting hole, then the first screw is rotated clockwise to fix the height of the moving bar, the plug and the second screw are rotated on the inner side of the moving bar after a knob is pinched, and the moving bar is moved downwards to the required height. When the electric pipette is used, the clamping blocks on the two sides are moved towards the center direction to the position where the clamping pads fully clamp the outer wall of the pipette, then the pipetting operation is carried out, and by clamping the pipette, the problem that when the electric pipette body is used for driving the pipette to be pulled out of a vessel, the pipette cannot be separated from the vessel can be effectively solved. The risk of loosening and even falling off caused by angle amplitude swing of the pipette due to mistaken touch is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of biological experiments, and in particular relates to an electric pipette for biological experiments. Background Art

[0002] In biological experiments, the electric pipette is a very practical instrument that can accurately transfer and dispense a certain amount of liquid. Compared with traditional manual pipettes, the electric pipette has the advantages of high accuracy, fast speed, reduced human errors, and easy operation.

[0003] Some existing electric pipettes for biological experiments need to be connected to a pipette during use. However, due to the influence of the long tube body, when the pipette is pulled out of the container, the tube body accidentally touches the inner wall of the container and is easily loosened or even falls off, which is very inconvenient. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an electric pipette for biological experiments to solve the problem that some existing electric pipettes for biological experiments proposed in the above background technology need to be connected to a pipette during use, but are restricted by the influence of a long tube body. In the process of pulling the pipette out of the container, the tube body accidentally touches the inner wall of the container and is very likely to become loose or even fall off, which is quite inconvenient.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric pipette for biological experiments, comprising an electric pipette body, a connecting tube fixedly connected to one side of the bottom of the electric pipette body, a base fixedly connected to one side of the connecting tube, two bases symmetrically arranged, a first screw being threadedly connected to the inner side of the base, a shifting strip being movably connected to the outer side of the first screw through a limiting hole, a second screw being threadedly connected to the inner side of the shifting strip, a plug being fixedly connected to one end of the second screw, a boss being rotatably connected to the outer side of the other end of the second screw, and a clamping block being fixedly connected to one side of the boss.

[0006] Preferably, one side of the clamping block is fixedly connected with a clamping pad, the clamping pad is made of a flexible material, and the clamping block and the clamping pad are both arc-shaped structures.

[0007] Preferably, a gasket is movably connected to the outer side of one end of the first screw rod, and a base is threadedly connected to the outer side of the first screw rod.

[0008] Preferably, the limiting holes are all U-shaped structures, the inner sides of the limiting holes are movably connected to the first screw rods, and the outer sides of the first screw rods are threadedly connected to the base.

[0009] Preferably, a knob is fixedly connected to one side of the plug, and a plurality of knobs are symmetrically arranged. A second screw is fixedly connected to the other side of the plug, and a shift strip is threadedly connected to the outer side of the second screw.

[0010] Preferably, one side of the base is fixedly connected with a limit bar, a plurality of limit bars are symmetrically arranged, and adjacent limit bars are slidably connected with shift bars.

[0011] Preferably, the outer sides of the second screw rods are movably connected with springs, and the springs are located between the shifting strip and the plug.

[0012] Preferably, the outer surfaces of the first screw and the second screw are both provided with electroplated anti-oxidation coatings.

[0013] Compared with the prior art, the utility model provides an electric pipette for biological experiments, which has the following beneficial effects:

[0014] 1. The utility model provides a clamping block, one side of which is fixedly connected with a clamping pad, which is made of flexible material, and the inner side of the clamping block is fixedly connected with a boss, the inner side of the boss is rotatably connected with a second screw, and the outer side of the second screw is threadedly connected with a moving strip. In biological experiments, after the external pipette is connected to the connecting tube at the bottom of the electric pipette body, the first screw is rotated counterclockwise and loosened, and the moving strip is moved down to the required height in conjunction with the U-shaped limiting hole, and then the first screw is rotated clockwise to fix the height of the moving strip, and the plug and the second screw are rotated on the inner side of the moving strip after pinching the knob to move the clamping blocks on both sides toward the center direction to the position where the clamping pads fully clamp the outer wall of the pipette, and then the pipetting operation is performed. By clamping the pipette, the risk of loosening or even falling off due to the angle swing of the pipette caused by accidental touch can be effectively reduced.

[0015] 2. The utility model provides a knob, one side of the knob is fixedly connected to a plug, and one side of the plug is fixedly connected to a second screw, which can effectively facilitate personnel to directly pinch and rotate;

[0016] 3. The utility model provides a gasket, the inner side of which is movably connected to the first screw, and the outer side of which is threadedly connected to the base, which can effectively reduce the looseness of the first screw during long-term use.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the axonometric structure of an electric pipette for biological experiments proposed by the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 3 This is a schematic diagram of the axonometric structure of a connecting tube of an electric pipette for biological experiments proposed by the utility model;

[0022] Figure 4 This is a front view structural diagram of an electric pipette for biological experiments proposed by the utility model;

[0023] Figure 5 This is a side view structural diagram of an electric pipette for biological experiments proposed by the utility model;

[0024] Figure 6 This is a bottom structural schematic diagram of an electric pipette for biological experiments proposed by the utility model;

[0025] In the figure: the electric pipette body 1, the connecting tube 2, the base 3, the first screw 4, the limiting hole 5, the shifting bar 6, the second screw 7, the boss 8, the clamping block 9, the clamping pad 10, the limiting bar 11, the gasket 12, the plug 13, the knob 14, and the spring 15. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-6The utility model provides a technical solution: an electric pipette for biological experiments, including an electric pipette body 1, a connecting tube 2 is fixedly connected to one side of the bottom of the electric pipette body 1, a base 3 is fixedly connected to one side of the connecting tube 2, two bases 3 are symmetrically arranged, the inner side of the base 3 is threadedly connected to a first screw 4, the outer side of the first screw 4 is movably connected to a shift bar 6 through a limiting hole 5, the inner side of the shift bar 6 is threadedly connected to a second screw 7, one end of the second screw 7 is fixedly connected to a plug 13, the outer side of the other end of the second screw 7 is rotatably connected to a boss 8, and one side of the boss 8 is fixedly connected to a clamping block 9. In biological experiments, the external pipette is connected to the electric pipette body 1. After the connecting tube 2 at the bottom of the electric pipette body 1 is connected, rotate counterclockwise and loosen the first screw 4, cooperate with the U-shaped limiting hole 5 to move the shift bar 6 down to the required height, and then rotate the first screw 4 clockwise to fix the height of the shift bar 6, and then hold the knob 14 to rotate the plug 13 and the second screw 7 on the inner side of the shift bar 6, and move the clamping blocks 9 on both sides toward the center until the clamping pads 10 fully clamp the outer wall of the pipette, and then perform the pipetting operation. By clamping the pipette, the risk of loosening or even falling off due to the angle swing of the pipette caused by accidental touch can be effectively reduced during the process of using the electric pipette body 1 to drive the pipette to withdraw from the vessel.

[0028] In the utility model, preferably, one side of the clamp block 9 is fixedly connected with a clamp pad 10, the clamp pad 10 is made of flexible material, the clamp block 9 and the clamp pad 10 are both arc-shaped structures, which can effectively fit the outer wall of the pipette and effectively reduce the wear of the pipette body caused by the clamping process.

[0029] In the utility model, preferably, a gasket 12 is movably connected to the outer side of one end of the first screw rod 4, and a base 3 is threadedly connected to the outer side of the first screw rod 4, which can effectively ensure the stability of the first screw rod 4 during long-term use.

[0030] In the present utility model, preferably, the limiting holes 5 are all U-shaped structures, the inner sides of the limiting holes 5 are movably connected with the first screw rod 4, and the outer sides of the first screw rod 4 are threadedly connected with the base 3, which can effectively fine-tune the height position of the shifting strip 6 and improve the clamping height.

[0031] In the utility model, preferably, a knob 14 is fixedly connected to one side of the plug 13, and a plurality of knobs 14 are symmetrically arranged. A second screw rod 7 is fixedly connected to the other side of the plug 13, and a shift strip 6 is threadedly connected to the outer side of the second screw rod 7, which can effectively facilitate personnel to directly pinch and rotate.

[0032] In the utility model, preferably, one side of the base 3 is fixedly connected to a limit bar 11, and a plurality of limit bars 11 are symmetrically arranged. The adjacent limit bars 11 are slidably connected to the shift bar 6, which can effectively reduce the swing amplitude of the shift bar 6 during use.

[0033] In the present invention, preferably, the outer side of the second screw rod 7 is movably connected with a spring 15, and the spring 15 is located between the shift bar 6 and the plug 13, which can effectively reduce the loosening amplitude of the second screw rod 7 during long-term use.

[0034] In the present invention, preferably, the outer surfaces of the first screw 4 and the second screw 7 are both provided with an electroplated anti-oxidation coating, which can effectively reduce the risk of decreased material strength due to oxidation corrosion.

[0035] The working principle and usage process of the utility model are as follows: when in use, in biological experiments, after connecting the external pipette to the connecting tube 2 at the bottom of the electric pipette body 1, rotate counterclockwise and loosen the first screw 4, cooperate with the U-shaped limiting hole 5 to move the shift bar 6 down to the required height, and then rotate the first screw 4 clockwise to fix the height of the shift bar 6, and then hold the knob 14 to rotate the plug 13 and the second screw 7 on the inner side of the shift bar 6, and move the clamping blocks 9 on both sides toward the center until the clamping pads 10 fully clamp the outer wall of the pipette, and then perform the pipetting operation. By clamping the pipette, the risk of loosening or even falling off due to the angle swing of the pipette caused by accidental touch during the process of using the electric pipette body 1 to drive the pipette to be removed from the vessel can be effectively reduced.

[0036] 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. An electric pipette for biological experiments, comprising an electric pipette body (1), characterized in that: A connecting tube (2) is fixedly connected to one side of the bottom of the electric pipette body (1), and a base (3) is fixedly connected to one side of the connecting tube (2). Two bases (3) are symmetrically arranged, and a first screw (4) is threadedly connected to the inner side of the base (3). A shift bar (6) is movably connected to the outer side of the first screw (4) through a limiting hole (5). A second screw (7) is threadedly connected to the inner side of the shift bar (6). A plug (13) is fixedly connected to one end of the second screw (7), and a boss (8) is rotatably connected to the outer side of the other end of the second screw (7). A clamping block (9) is fixedly connected to one side of the boss (8).

2. An electric pipette for biological experiments according to claim 1, characterized in that: One side of the clamping block (9) is fixedly connected with a clamping pad (10), the clamping pad (10) is made of a flexible material, and the clamping block (9) and the clamping pad (10) are both arc-shaped structures.

3. The electronic pipette for biological experiments according to claim 1, characterized in that: The outer side of one end of the first screw rod (4) is movably connected to a gasket (12), and the outer side of the first screw rod (4) is threadedly connected to a base (3).

4. The electronic pipette for biological experiments according to claim 1, characterized in that: The limiting holes (5) are all U-shaped structures, the inner sides of the limiting holes (5) are movably connected to the first screw rods (4), and the outer sides of the first screw rods (4) are threadedly connected to the base (3).

5. The electronic pipette for biological experiments according to claim 1, characterized in that: One side of the plug (13) is fixedly connected to a knob (14), and a plurality of knobs (14) are symmetrically arranged. The other side of the plug (13) is fixedly connected to a second screw rod (7), and the outer side of the second screw rod (7) is threadedly connected to a shifting strip (6).

6. The electronic pipette for biological experiments according to claim 1, characterized in that: One side of the base (3) is fixedly connected to a limit strip (11), a plurality of limit strips (11) are symmetrically arranged, and adjacent limit strips (11) are slidably connected to shift strips (6).

7. The electronic pipette for biological experiments according to claim 1, characterized in that: The outer side of the second screw rod (7) is movably connected with a spring (15), and the spring (15) is located between the shifting bar (6) and the plug (13).

8. The electronic pipette for biological experiments according to claim 1, characterized in that: The outer surfaces of the first screw (4) and the second screw (7) are both provided with an electroplated anti-oxidation coating.

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