Pipette pipetting auxiliary device

Abstract

The utility model provides a pipette pipetting auxiliary device which comprises a filter structure and an auxiliary structure which correspond to a pipette, the filter structure comprises a filter cartridge, a clamping and fixing structure is arranged on the filter cartridge, the auxiliary structure comprises an auxiliary sleeve, the auxiliary sleeve corresponds to the pipette, a first blocking block is arranged in the auxiliary sleeve in a sliding fit mode, and a second blocking block is arranged in the auxiliary sleeve. An ear washing bulb is arranged on the auxiliary sleeve, a through groove is formed in the first blocking block, a second blocking block is arranged in the through groove, and the through groove corresponds to the ear washing bulb. According to the utility model, the clamping and fixing structure is arranged on the filter cartridge, the filter cartridge can be arranged in a beaker, so that liquid in the beaker can be conveniently filtered, a pipette is prevented from being blocked during pipetting, the first blocking block is arranged in the auxiliary sleeve in a sliding manner, the through groove is formed in the first blocking block, and the second blocking block is arranged in the through groove; the auxiliary sleeve can be blocked through the first blocking block, finger blocking is not needed, liquid is prevented from touching fingers, and the liquid can be controlled to flow out by directly pushing the push rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipette auxiliary device technical field, concretely is a pipette auxiliary device. BACKGROUND

[0002] The pipette is the laboratory commonly used to accurately take a certain volume liquid's measuring formula instrument, and its working principle is to utilize pressure difference to realize liquid's transfer, when the pipette is in use, the pipe mouth is blocked with hand, the liquid in the pipette is under the action of gravity, and the upper part in the tube forms a small vacuum, when the pressure under the natural environment is higher than the pressure under the vacuum environment, the liquid in the tube will not flow downward, but in the process of taking, when the taking speed is too fast, liquid is easily sucked into the pipette under the action of pressure, leading to the contact of the finger and the liquid, thereby causing the pollution of the liquid and easily causing the injury of the finger.

[0003] Therefore, the utility model provides a pipette auxiliary device. UTILITY MODEL CONTENT

[0004] In view of the deficiency of prior art, the utility model aims at providing a pipette auxiliary device to solve the problems in the background art, which can filter the liquid in the beaker, prevent the pipette from being blocked during pipetting, does not need to block with fingers, prevents the liquid from touching the fingers, controls the liquid to flow out by directly pushing the push rod, and can be operated by one hand, which is convenient to use.

[0005] In order to realize the above-mentioned purpose, the utility model is realized through the following technical scheme: a pipette auxiliary device, which comprises a filter structure corresponding to the pipette and an auxiliary structure, the filter structure comprises a filter cartridge, a clamping and fixing structure is arranged on the filter cartridge, the auxiliary structure comprises an auxiliary sleeve corresponding to the pipette, a first blocking piece is slidably fitted in the auxiliary sleeve, an ear bulb is arranged on the auxiliary sleeve, a through slot is formed in the first blocking piece, a second blocking piece is arranged in the through slot, and the through slot corresponds to the ear bulb.

[0006] Further, the clamping and fixing structure comprises a plurality of first telescopic rods, the first telescopic rods are fixedly connected with the filter cartridge, and a second telescopic rod is arranged at one end of the first telescopic rod.

[0007] Further, the second telescopic rod comprises a first rod body and a second rod body, a first spring is fixed between the first rod body and the second rod body, and a clamping plate is fixed at one end of the second rod body.

[0008] Further, a sliding groove is formed in the auxiliary sleeve, a sliding block is slidably fitted in the sliding groove, and the sliding block corresponds to the first blocking piece.

[0009] Further, a push rod is fixed on the first blocking piece, and the push rod is fixedly connected with the sliding block.

[0010] Further, the through groove is in sliding connection with the second plug, one end of the second plug is located in the through groove, and the other end of the second plug is located in the pipette.

[0011] Further, a plurality of second springs are fixed between the second plug and the first plug.

[0012] Further, the bottom of the second plug is a T-shaped structure, the top of the second plug is a strip-shaped structure, and a gap is arranged between the top of the second plug and the through groove.

[0013] The pipette auxiliary device has the advantages that the pipette auxiliary device is convenient to use.

[0014] The filter cartridge can be installed in the beaker, so that the liquid in the beaker is conveniently filtered, the pipette is prevented from being blocked during pipetting, the first plug is slidably installed in the auxiliary sleeve, the through groove is formed in the first plug, the second plug is installed in the through groove, the auxiliary sleeve can be blocked by the first plug, so that the fingers are prevented from being touched by the liquid, the liquid flow is controlled by directly pushing the push rod, and one hand can operate, so that the pipette auxiliary device is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole assembly perspective structural schematic view of the pipette auxiliary device.

[0016] Figure 2 It is a whole assembly sectional structure schematic view of the pipette auxiliary device.

[0017] Figure 3 It is a schematic view of A in the figure. Figure 2

[0018] Figure 4 It is a schematic view of B in the figure. Figure 2

[0019] Figure 5 It is a whole assembly perspective structural schematic view of the pipette auxiliary device.

[0020] Figure 6 It is a whole assembly sectional structure schematic view of the pipette auxiliary device.

[0021] ​​In the figure: 1, pipette; 2, ear bulb; 3, filter cartridge; 4, first telescopic rod; 5, second telescopic rod; 6, clamping plate; 7, first spring; 8, auxiliary sleeve; 9, sliding groove; 10, sliding block; 11, first plug; 12, through groove; 13, second plug; 14, second spring; 15, push rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] Please refer to Figures 1 to 6 The utility model provides a technical scheme: a pipette auxiliary device, which comprises filter structure and auxiliary structure corresponding to the pipette 1, the filter structure comprises a filter cartridge 3, the filter cartridge 3 is provided with clamping and fixing structure, the auxiliary structure comprises an auxiliary sleeve 8, the auxiliary sleeve 8 corresponds to the pipette 1, the first plug 11 is slidably arranged in the auxiliary sleeve 8, the ear bulb 2 is arranged on the auxiliary sleeve 8, the through groove 12 is arranged in the first plug 11, the second plug 13 is arranged in the through groove 12, and the through groove 12 corresponds to the ear bulb 2.

[0024] In the embodiment, the clamping and fixing structure comprises a plurality of first telescopic rods 4, the first telescopic rods 4 are fixedly connected with the filter cartridge 3, one end of the first telescopic rod 4 is provided with a second telescopic rod 5, the second telescopic rod 5 comprises a first rod body and a second rod body, the first spring 7 is fixed between the first rod body and the second rod body, and the second rod body is fixedly provided with the clamping plate 6.

[0025] Specifically, the first telescopic rod 4 and the second telescopic rod 5 can be pulled to make the clamping plate 6 clamped on the cup opening of the beaker, so that the filter cartridge 3 can be fixed in the beaker, and the liquid in the beaker can be filtered, so that the solid residues in the liquid do not block the pipette 1.

[0026] The auxiliary sleeve 8 is provided with the sliding groove 9, the sliding block 10 is slidably arranged in the sliding groove 9, the sliding block 10 corresponds to the first plug 11, the push rod 15 is fixedly arranged on the first plug 11, the push rod 15 is fixedly connected with the sliding block 10, the through groove 12 is slidably connected with the second plug 13, one end of the second plug 13 is located in the through groove 12, the other end of the second plug 13 is located in the pipette 1, a plurality of second springs 14 are fixed between the second plug 13 and the first plug 11, the bottom of the second plug 13 is in T-shaped structure, the top of the second plug 13 is in strip-shaped structure, and the gap is arranged between the top of the second plug 13 and the through groove 12.

[0027] Specifically, when pipetting, the ear bulb 2 is inserted into the insertion channel 12, so that the ear bulb 2 pushes the second plug 13 downward, so that the second plug 13 no longer blocks the channel 12, and the second spring 14 is stretched, so that the pipette 1 can be evacuated, so that a negative pressure is generated in the pipette 1.

[0028] When the ear bulb 2 is pulled out, the second spring 14 is now elastically returned to drive the second plug 13 to block the channel 12, so that the pipette 1 is in a state of negative pressure, and then the push rod 15 can be pushed upward, so that the push rod 15 drives the first plug 11 to slide upward, so that the pipette 1 is filled with air, and the liquid can flow out.

[0029] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A pipette pipetting aid device comprising a filter structure and an aid structure corresponding to a pipette (1), characterized in that, The filter structure includes a filter cartridge (3), a clamping and fixing structure is arranged on the filter cartridge (3), the auxiliary structure includes an auxiliary sleeve (8), the auxiliary sleeve (8) corresponds to the pipette (1), a first plug (11) is slidably connected in the auxiliary sleeve (8), a bulb (2) is arranged on the auxiliary sleeve (8), a through slot (12) is formed in the first plug (11), a second plug (13) is arranged in the through slot (12), and the through slot (12) corresponds to the bulb (2).

2. A pipetting aid according to claim 1, characterized in that: The clamping and fixing structure includes a plurality of first telescopic rods (4), the first telescopic rods (4) are fixedly connected with the filter cartridge (3), and a second telescopic rod (5) is arranged at one end of the first telescopic rod (4).

3. A pipetting aid according to claim 2, characterized in that: The second telescopic rod (5) includes a first rod body and a second rod body, a first spring (7) is fixed between the first rod body and the second rod body, and a clamping plate (6) is fixed at one end of the second rod body.

4. The pipetting aid of claim 1, wherein: A sliding groove (9) is formed in the auxiliary sleeve (8), a sliding block (10) is slidably connected in the sliding groove (9), and the sliding block (10) corresponds to the first plug (11).

5. A pipetting aid according to claim 4, characterized in that: A push rod (15) is fixed on the first plug (11), and the push rod (15) is fixedly connected with the sliding block (10).

6. A pipetting aid according to claim 1, characterized in that: The through slot (12) is slidably connected with the second plug (13), one end of the second plug (13) is located in the through slot (12), and the other end of the second plug (13) is located in the pipette (1).

7. The pipetting aid of claim 1, wherein: A plurality of second springs (14) are fixed between the second plug (13) and the first plug (11).

8. A pipetting aid according to claim 4, characterized in that: The bottom of the second plug (13) is a T-shaped structure, the top of the second plug (13) is a strip-shaped structure, and a gap is formed between the top of the second plug (13) and the through slot (12).

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