CN214863671U - Disposable liquid-transfering gun head - Google Patents

Abstract

The application relates to a disposable pipette tip, and belongs to the technical field of experimental equipment. The liquid suction gun comprises a gun head body and an extension pipe, wherein the gun head body sequentially comprises a liquid suction section and a connecting section, and the extension pipe is fixedly inserted into the connecting section. The liquid level suction device has the effect that liquid can be sucked under the condition that the liquid level is lower.

Description

Disposable liquid-transfering gun head

Technical Field

The application relates to the field of experimental equipment, especially relates to a disposable liquid-transfering gun head.

Background

The pipette tip is a consumable material with large usage amount in the fields of medical treatment, biology, chemistry and the like, and is matched with the pipette tip to play a role in quantitatively measuring liquid.

The prior pipette tip is generally conical and is a shell which is communicated up and down, wherein one end with larger inner diameter is used for fixing the pipette tip, and the other end with smaller inner diameter is used for sucking liquid.

In view of the above-described related art, the inventors have considered that when the distance from the liquid surface to the bottle opening is longer than the length of the pipette tip, a situation in which the pipette tip cannot suck the liquid easily occurs.

SUMMERY OF THE UTILITY MODEL

In order to enable the pipette tip to aspirate liquid at a lower liquid level, the present application provides a disposable pipette tip.

The application provides a disposable pipette head adopts following technical scheme:

the disposable pipette tip comprises a tip body and an extension tube, wherein the tip body sequentially comprises a liquid suction section and a connecting section, and the extension tube is fixedly inserted in the connecting section.

Through adopting above-mentioned technical scheme, through setting up the extension pipe, during normal use, the extension pipe can be placed in not using on one side, and when needs stretched into longer distance, through installing the extension pipe on the rifle head body, the extension pipe is kept away from the one end of rifle head body and is connected with the pipetting gun for the extraction of carrying out liquid in the bottle can be stretched into to the rifle head body.

Optionally, a sealant is arranged on the outer wall of one end, inserted and fixed with the connecting section, of the extension pipe.

Through adopting above-mentioned technical scheme, through sealed glue that sets up at the linkage segment outer wall for the leakproofness between extension pipe and the linkage segment is better, and the back is fixed to the cartridge simultaneously, because sealed glue warp the back and laminate with the linkage segment inner wall, the extension pipe is difficult to break away from the linkage segment.

Optionally, the extension tube comprises a first section, a second section, and a bellows connecting the first and second sections.

Through adopting above-mentioned technical scheme for the extension pipe can further extend, thereby further improve the length that the extension pipe can extend.

Optionally, the extension pipe still includes bending-resistant component, bending-resistant component is two sets of at least and follows extension pipe circumference 180 degrees rotational symmetry sets up, bending-resistant component includes connecting rod and connecting seat, the connecting seat has two, two the connecting seat is divided and is established first section with the second section, the both ends of connecting rod and two the connecting seat one-to-one slides and is connected and follows the connecting rod axis direction slides.

Through adopting above-mentioned technical scheme, through the bending resistance subassembly for first section and second section keep certain with the axial region, and the bellows part of extension pipe is difficult to buckle and warp, and the connecting rod slides with the connecting seat and is connected, makes the bellows can extend, and two bending resistance subassemblies are through symmetrical arrangement, make the bending restriction power that first section and second section received keep the symmetry, and the bending resistance effect is better.

Optionally, a filter element is installed in the gun head body.

Through adopting above-mentioned technical scheme, through this internal installation filter core at the rifle head, cut off this internal cavity of rifle head for behind the rifle head body suction liquid, liquid is difficult to get into the pipetting gun, thereby keeps the cleanness of pipetting gun, is difficult to pollute subsequent pipetting gun head.

Optionally, the liquid suction device further comprises a closed cover, the closed cover is provided with a jack, and one end, far away from the connecting section, of the liquid suction section is inserted into the jack.

By adopting the technical scheme, the sealing cover is used for sealing the gun head body, when the gun head is not used, dust in the air is prevented from entering the gun head body through the sealing cover, the cleanness of the interior of the gun head body is kept, and after the gun head is used, liquid leakage and pollution are prevented through the sealing cover.

Optionally, the bottom of the insertion hole is embedded with absorbent paper.

Through adopting above-mentioned technical scheme, through imbibition paper, absorb the liquid that rifle head body exposes, further prevent liquid leakage pollution, because imbibition paper absorbs liquid, the closing cap later stage drops, also is difficult for leaking the pollution.

Optionally, the inner wall of the insertion hole is provided with an annular sealing edge.

Through adopting above-mentioned technical scheme, through the annular seal limit, improve the joint strength between closing cap and the rifle head body on the one hand for the closing cap is difficult to drop, and on the other hand, after making imbibition paper absorbed liquid, the closing cap drops, and liquid is also difficult for flowing out along the pore wall of jack.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the extension pipe, the extension pipe can be placed on one side to be unused in normal use, and when the extension pipe needs to extend for a longer distance, the extension pipe is arranged on the gun head body, and one end, far away from the gun head body, of the extension pipe is connected with the liquid-transferring gun, so that the gun head body can extend into a bottle to extract liquid;

2. the corrugated pipe enables the extension pipe to be further extended, so that the extension pipe can be further extended, the first section and the second section can keep a certain same shaft part through the bending-resistant components, the corrugated pipe part of the extension pipe is not easy to bend and deform, the connecting rod is connected with the connecting seat in a sliding mode, so that the corrugated pipe can be extended, and the two bending-resistant components are symmetrically arranged, so that the bending limiting force on the first section and the second section is kept symmetrical, and the bending-resistant effect is better;

3. through this internal installation filter core of rifle head, cut off this internal cavity of rifle head for behind the rifle head body inhales liquid, liquid is difficult to get into the liquid-transfering gun, thereby keeps the cleanness of liquid-transfering gun, is difficult to pollute subsequent liquid-transfering gun head, and the closing cap is used for sealing the rifle head body, when not using, prevents the dust in the air through the closing cap and gets into the rifle head body, keeps the inside cleanness of rifle head body, after using, prevents liquid leakage pollution through the closing cap.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

fig. 2 is a cross-sectional view of a body of a lance tip in an embodiment of the present application;

FIG. 3 is a schematic structural view of an extension pipe in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a closure cap in an embodiment of the present application.

Description of reference numerals: 1. a gun head body; 11. a liquid suction section; 12. a connecting section; 13. a mounting cavity; 14. a liquid suction chamber; 2. a filter element; 3. an extension tube; 31. a first stage; 32. a second stage; 33. a bellows; 34. sealing glue; 35. a connecting rod; 351. an annular stop block; 36. a connecting seat; 361. anti-bending holes; 4. a closure cap; 41. a jack; 42. liquid absorbing paper; 43. and an annular sealing edge.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a disposable pipette tip.

Referring to fig. 1 and 2, a disposable pipette tip comprises a tip body 1, a filter element 2, an extension tube 3 and a sealing cover 4, wherein the tip body 1 is a circular truncated cone shell which is through from top to bottom and sequentially comprises a liquid suction section 11 and a connecting section 12 from one end with a larger inner diameter to one end with a smaller inner diameter, a cavity in the connecting section 12 is set as an installation cavity 13, and a cavity in the liquid suction section 11 is set as a liquid suction cavity 14.

Referring to fig. 2, the filter element 2 is formed by combining multiple layers of high-density glass fibers, the filter element 2 is embedded at the junction of the installation cavity 13 and the liquid suction cavity 14, so that one part of the filter element 2 is positioned in the installation cavity 13, the other part of the filter element 2 is positioned in the liquid suction cavity 14, and the installation cavity 13 and the liquid suction cavity 14 are separated by the filter element 2.

Referring to fig. 1 and 3, the extension pipe 3 includes a first section 31, a second section 32, a bending-resistant assembly and a bellows 33 connecting the first section 31 and the second section 32, one end of the first section 31 is fixed to the connection section 12 in an inserted manner, an outer wall of one end of the first section 31 fixed to the connection section 12 in an inserted manner is a circular table surface, an inclination of the outer wall of one end of the first section 31 fixed to the connection section 12 in an inserted manner is consistent with that of the connection section 12, a layer of sealant 34 is fixed to an outer wall of one end of the first section 31 fixed to the connection section 12 in an inserted manner, and one end of the second section 32 far away from the first section 31 is used for being connected with a pipette.

The connection mode between the first section 31 and the connection section 12 can also adopt a mode that the connection section 12 is inserted into the first section 31, and during the connection mode, the sealant 34 is adhesively fixed on the inner wall of the first section 31.

Referring to fig. 3, one end of the bellows 33 is integrally provided with the first section 31, and the other end of the bellows 33 is integrally provided with the second section 32, and the length of the extension pipe 3 is adjusted by compressing and expanding the bellows 33.

Referring to fig. 3, the quantity of bending-resistant subassembly can be two sets of, two sets of bending-resistant subassemblies set up along extension pipe 3 circumference 180 degrees rotational symmetry, the bending-resistant subassembly includes connecting rod 35 and connecting seat 36, connecting seat 36 has two, a connecting seat 36 an organic whole sets up and is close to second section 32 one end outer wall in first section 31, another connecting seat 36 an organic whole sets up and is close to first section 31 one end outer wall in second section 32, anti curved hole 361 has been seted up on two connecting seats 36, two anti curved hole 361 are coaxial, the both ends one-to-one of connecting rod 35 slides and installs in two anti curved holes 361, and the both ends threaded fixation of connecting rod 35 has annular stopper 351, restriction connecting rod 35 breaks away from anti curved hole 361.

Referring to fig. 1 and 4, the closing cap 4 is used for closing the liquid suction section 11, one end of the closing cap 4 is provided with an insertion hole 41, one end of the liquid suction section 11, which is far away from the connecting section 12, is inserted and fixed in the insertion hole 41, the bottom of the insertion hole 41 is embedded with liquid suction paper 42, and the middle part of the inner wall of the insertion hole 41 is integrally provided with an annular sealing edge 43.

The implementation principle of a disposable pipette tip in the embodiment of the application is as follows: whether the extension tube 3 is used or not is selected according to the requirement, the corrugated tube 33 of the extension tube 3 is adjusted according to the requirement, the length of the extension tube 3 is adjusted through the expansion and contraction of the corrugated tube 33, and finally the length of the liquid suction gun head is adjusted.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A disposable pipette tip, characterized in that: the pipette tip comprises a pipette tip body (1) and an extension pipe (3), wherein the pipette tip body (1) sequentially comprises a liquid suction section (11) and a connecting section (12), and the extension pipe (3) and the connecting section (12) are fixedly inserted.

2. A disposable pipette tip according to claim 1, characterised in that: and a sealant (34) is arranged on the outer wall of one end, inserted and fixed by the extension pipe (3) and the connecting section (12).

3. A disposable pipette tip according to claim 2, characterised in that: the extension pipe (3) comprises a first section (31), a second section (32) and a bellows (33) connecting the first section (31) and the second section (32).

4. A disposable pipette tip according to claim 3, characterised in that: extension pipe (3) still include bending-resistant subassembly, bending-resistant subassembly is two sets of at least and follows extension pipe (3) circumference 180 degrees rotational symmetry sets up, bending-resistant subassembly includes connecting rod (35) and connecting seat (36), connecting seat (36) have two, two connecting seat (36) are divided and are established first section (31) with second section (32), the both ends and two of connecting rod (35) connecting seat (36) one-to-one slide to be connected and follow connecting rod (35) axis direction slides.

5. A disposable pipette tip according to claim 4, characterised in that: and a filter element (2) is arranged in the gun head body (1).

6. A disposable pipette tip according to claim 5, characterised in that: the liquid suction device is characterized by further comprising a closing cover (4), wherein an insertion hole (41) is formed in the closing cover (4), and one end, far away from the connecting section (12), of the liquid suction section (11) is inserted into the insertion hole (41).

7. A disposable pipette tip according to claim 6, characterised in that: and liquid absorption paper (42) is embedded at the bottom of the insertion hole (41).

8. A disposable pipette tip according to claim 7, characterised in that: the inner wall of the jack (41) is provided with an annular sealing edge (43).

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