阅读说明：本技术 一种洗耳球防倒吸装置 (Anti-suck-back device for ear washing ball ) 是由 李保军 陈钦松 王莹 徐文祥 轩红钟 肖慧丽 刘梦雪 张提提 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种洗耳球防倒吸装置,该洗耳球防倒吸装置自上而下顺次包括：连接管、防倒吸机构和吸液枪头,连接管、防倒吸机构和吸液枪头顺次连通；其中,防倒吸机构由至少两个竖直串联的泡体组成,多个泡体的容积自上而下逐渐减小,且位于最下端的泡体的任意一处横截面面积均大于吸液枪头顶端的横截面面积。该洗耳球防倒吸装置配合洗耳球使用能够很好的防止在移取溶液的过程中出现倒吸现象,解决了移取溶液过程中因为吸力过大或者溶液在微量移取过程中的不足,产生的移取溶液倒吸的现象,防止残留在洗耳球内的溶液对其他实验的交叉干扰,避免移取浓酸浓碱倒吸进洗耳球内腐蚀洗耳球。(The invention discloses an anti-suck-back device for an aurilave, which sequentially comprises from top to bottom: the connecting pipe, the suck-back prevention mechanism and the liquid suction gun head are communicated in sequence; the anti-suck-back mechanism is composed of at least two bubble bodies which are vertically connected in series, the volumes of the bubble bodies are gradually reduced from top to bottom, and the cross section area of any position of the bubble body at the lowermost end is larger than that of the top end of the liquid suction gun head. This anti-suck-back device of aurilave cooperation aurilave uses can be fine prevent to appear suck-back phenomenon at the in-process that moves the solution of getting, has solved and has moved the solution in-process because suction is too big or solution moves the not enough of getting the in-process at the trace, and the phenomenon of getting solution suck-back is moved in the production, prevents to remain the solution in the aurilave to the cross interference of other experiments, avoids moving and gets the concentrated acid and alkali suck-back of concentrated acid and corrode the aurilave in the aurilave.)

1. The utility model provides an anti-suck-back device of aurilave which characterized in that, anti-suck-back device of aurilave top-down includes in order: the liquid suction device comprises a connecting pipe (3), a suck-back prevention mechanism and a liquid suction gun head (1), wherein the connecting pipe (3), the suck-back prevention mechanism and the liquid suction gun head (1) are communicated in sequence; wherein the content of the first and second substances,

the anti-suck-back mechanism is composed of at least two bubble bodies (2) which are vertically connected in series, the volumes of the bubble bodies (2) are gradually reduced from top to bottom, and the cross section area of any position of the bubble body (2) positioned at the lowermost end is larger than that of the top end of the liquid suction gun head (1).

2. The anti-suck device of aurilave as claimed in claim 1, characterized in that the cross-sectional area of the bulb (2) decreases from the middle to the two ends, and the distance from the position of the largest cross-sectional area in each bulb (2) to the bottom end is greater than the distance to the top end.

3. The anti-suck device of aurilave as claimed in claim 2, characterized in that, the side of any side of each bubble body (2) is a smooth curved surface.

4. The anti-suck-back device for the aurilave as set forth in claim 1, characterized in that the inner angle of the connecting position of two adjacent bulbs (2) is an obtuse angle.

5. An anti-suck device against aurilaves according to claim 1, characterized in that the top surface of the bulb (2) at the uppermost end is arranged as an annular flat surface (7) perpendicular to the connecting tube (3).

6. The anti-suck back device of aurilave as set forth in claim 1, characterized in that the connecting tube (3) comprises: the connector tube (6) and the communicating tube (5) are fixedly connected in sequence from top to bottom.

7. The anti-suck-back device of aurilave as claimed in claim 6, wherein the interface tube (6) is a truncated cone interface.

8. The anti-suck-back device for an ear-washing ball according to any one of claims 1 to 7, characterized in that the connecting tube (3), the anti-suck-back mechanism and the pipette tip (1) are of an integrally formed structure.

9. The anti-suck-back device for an ear washing ball according to claim 8, characterized in that the connecting tube (3), the anti-suck-back mechanism and the pipette tip (1) are all made of transparent PP material.

Technical Field

The invention relates to an anti-suck-back device of an ear washing ball.

Background

An aurilave, also called as an aurilave, is a rubber texture, the lower part is spherical, the upper part is a tubular instrument, can blow out a large amount of wind fast through the extrusion, is a tool commonly used for quantitatively removing solution in a chemical laboratory, and is often used with the aurilave in combination with a pipette in the experimental process.

In the process of using the aurilave daily, people find that in the process of transferring the solution by using the aurilave and a pipette, the transferred solution is often sucked back into the aurilave because the suction force of the aurilave is too large or the solution amount is transferred in a trace manner, and the rubber can be corroded in the process of contacting with the inner wall of the aurilave by using a solution of concentrated acid and concentrated alkali or an organic solvent having a corrosive effect on the rubber.

Forgetting to timely treat corrosive liquid sucked back into the aurilave in the experimental process, the aurilave is damaged, and other experiments can be possibly cross-polluted.

How can prevent that aurilave from producing the phenomenon of suck-back at the in-process that absorbs solution, prevent that aurilave from being corroded by solution such as the strong acid that has corrosivity, strong alkali, perhaps remain the solution in the aurilave spheroid and get the in-process that moves of other experiments, produce cross contamination, be the problem that needs to solve at present urgently.

Disclosure of Invention

The invention aims to provide an anti-suck-back device for an aurilave, which is matched with the aurilave for use, can well prevent the suck-back phenomenon in the process of transferring solution, solves the problem that the transferred solution suck-back phenomenon is generated because the suction force is too large or the solution is insufficient in the trace transfer process in the process of transferring solution, prevents the solution remained in the aurilave from cross interference to other experiments, and avoids the phenomenon that concentrated acid and concentrated alkali are sucked back into the aurilave to corrode the aurilave.

In order to achieve the above object, the present invention provides an anti-suck device for an ear washing ball, which comprises, from top to bottom: the connecting pipe, the suck-back prevention mechanism and the liquid suction gun head are communicated in sequence; the anti-suck-back mechanism is composed of at least two bubble bodies which are vertically connected in series, the volumes of the bubble bodies are gradually reduced from top to bottom, and the cross section area of any position of the bubble body at the lowermost end is larger than that of the top end of the liquid suction gun head.

Preferably, the cross-sectional area of the bubble body is gradually reduced from the middle part to the two ends, and the distance from the position with the largest cross-sectional area in each bubble body to the bottom end is larger than the distance from the top end.

Preferably, the side surface of any one side of each bubble body is a smooth curved surface.

Preferably, the inner included angle of the connecting position of two adjacent bubbles is an obtuse angle.

Preferably, the top surface of the uppermost bubble is provided as an annular plane perpendicular to the connection tube.

Preferably, the connection pipe includes: the interface tube and the communicating tube are fixedly connected in sequence from top to bottom.

Preferably, the interface tube is a frustum-conical interface.

Preferably, the connecting pipe, the suck-back prevention mechanism and the liquid suction gun head are of an integrally formed structure.

Preferably, the connecting pipe, the suck-back prevention mechanism and the liquid suction gun head are all made of transparent PP materials.

According to the technical scheme, the anti-suck-back device for the aurilave is matched with the aurilave for use, so that the phenomenon of suck-back in the process of transferring the solution can be well prevented, the problem that the transfer solution suck-back is generated due to the fact that the suction force is too large or the solution is not enough in the process of trace transfer in the process of transferring the solution is solved, the cross interference of the solution remained in the aurilave on other experiments is prevented, and the phenomenon that concentrated acid and concentrated alkali are transferred and sucked back into the aurilave to corrode the aurilave is avoided.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a first preferred embodiment of an anti-suck back device for an earwash bulb;

FIG. 2 is a schematic view of an earwash used in conjunction with the earwash anti-suck device of FIG. 1;

FIG. 3 is a schematic structural view of a second preferred embodiment of an anti-suck back device for an ear washing ball;

FIG. 4 is a schematic view of an earwash in cooperation with the earwash anti-suck device of FIG. 3.

Description of the reference numerals

1 liquid suction gun head and 2 foam body

3 connecting pipe 4 ear washing ball

5 communicating pipe 6 interface tube

7 annular plane

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, the terms "upper, lower, top, bottom, far, near, side," and the like included in the terms simply represent the orientation of the terms in a conventional use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.

Referring to fig. 1-4, the anti-suck-back device for an ear washing ball comprises, from top to bottom: the connecting pipe 3, the suck-back prevention mechanism and the liquid suction gun head 1 are sequentially communicated; the anti-suck-back mechanism is composed of at least two bubble bodies 2 which are vertically connected in series, the volumes of the bubble bodies 2 are gradually reduced from top to bottom, and the cross section area of any position of the bubble body 2 at the lowermost end is larger than that of the top end of the liquid suction gun head 1.

Through the implementation of above-mentioned technical scheme, the anti-suck-back device of aurilave cooperation aurilave 4 uses can be fine prevent to appear the suck-back phenomenon at the in-process that moves the solution of getting, has solved and has moved the solution in-process because suction is too big or solution moves the not enough of getting the in-process at the trace, the phenomenon of the solution suck-back is got in moving of production, prevents to remain the solution in aurilave 4 to the cross interference of other experiments, avoids moving to get the concentrated acid and concentrated alkali suck-back and corrodes aurilave 4 in the aurilave 4.

In this embodiment, in order to further increase the suck back prevention effect and increase the smoothness of liquid sucking, the cross-sectional area of the bubble bodies 2 is gradually reduced from the middle portion toward the both ends, and the distance from the position of the bubble body 2 where the cross-sectional area is largest to the bottom end thereof is greater than the distance to the top end thereof.

In this embodiment, in order to further increase the suck back prevention effect and increase the smoothness of liquid sucking, the side surface of any one side of each of the bubbles 2 is a smooth curved surface.

In this embodiment, in order to increase the anti-suck back effect of the upper bubble body 2, the inner included angle of the connection position of two adjacent bubble bodies 2 is an obtuse angle. When one bubble body 2 positioned below is filled with liquid, the liquid is transited to one bubble body 2 positioned above to be continuously stored, and the liquid cannot rapidly flow into the bubble body 2 positioned above through the arrangement of the obtuse angle at the connecting part.

In this embodiment, in order to prevent the liquid from rapidly entering the connection tube 3 and to buffer the liquid suction, the top surface of the bubble body 2 located at the uppermost end is provided with an annular flat surface 7 perpendicular to the connection tube 3. The acting force of the liquid fleeing up is resolved into the horizontal acting force through the arrangement of the annular plane 7, so that the liquid rises more smoothly and is not fleed into the ear washing ball 4 rapidly.

In this embodiment, to further provide a connection pipe 3, the connection pipe 3 includes: the mouthpiece 6 and the communicating pipe 5 are fixedly connected in sequence from top to bottom.

In this embodiment, the mouthpiece 6 is a frusto-conical mouthpiece. As shown in figures 1 and 2, the interface is suitable for the ear washing ball 4 to be sleeved on the interface tube 6, the outer diameter of the frustum-shaped interface is gradually increased from top to bottom, and the sealing performance and the tightening effect of connection can be improved. Of course, as shown in fig. 3 and 4, instead of the mouthpiece 6 being a tapered mouthpiece, the end of the aurilave 4 can be inserted into the mouthpiece 6 for connection by using a plug-in connection.

In this embodiment, the connection tube 3, the suck back prevention mechanism and the pipette tip 1 are integrally formed to increase the overall stability.

In this embodiment, the connecting tube 3, the suck-back prevention mechanism and the pipette tip 1 are all made of transparent PP material. The PP material is polypropylene, which is a non-toxic, odorless, tasteless, high-density, side-chain-free, highly-crystallized linear polymer, has excellent comprehensive performance, and can resist acid, alkali and organic solution. The transparent PP material that the material chose to select can be able to bear strong acid, alkali and organic solvent, can in time discover to move and get the solution in-process and have or not take place to suck the scene backward, because its quality is light, can make things convenient for the laboratory technician to operate in the use with aurilave 4 supporting.

Taking the two bubble bodies 2 arranged in the ear washing ball suck-back prevention device as an example, the whole length of the ear washing ball suck-back prevention device can be set to 12cm, wherein the connecting pipe is 33cm, the heights of the two bubble bodies 2 are respectively 3cm and 2cm, the height of the liquid absorption gun head 1 is 4cm, the diameter of a port of the connecting pipe 3 is 8-9mm, and the volumes of the two bubble bodies 2 are respectively 10ml and 5 ml.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.