CN210303721U

CN210303721U - Liquid-transfering gun

Info

Publication number: CN210303721U
Application number: CN201920618594.0U
Authority: CN
Inventors: 冯婷婷
Original assignee: Shanxi University of Chinese Mediciine
Current assignee: Shanxi University of Chinese Mediciine
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-04-14
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to the field of liquid movement, in particular to a liquid-transfering gun, which comprises a liquid-transfering gun body, a liquid-transfering gun head, a liquid-storing cavity arranged in the liquid-transfering gun body and a backflow preventing device; the pipette comprises a pipette head, a pipette body, a liquid storage cavity, a liquid transfer gun body and a liquid transfer gun body, wherein the pipette head is arranged in the pipette body; prevent that flow reversal device encircles and sets up on the inner wall of liquid-transfering gun head, the utility model discloses a liquid-transfering gun through encircle preventing flow reversal device and set up on the inner wall of liquid-transfering gun head, can effectually hold back remaining liquid to liquid-transfering gun head inner wall, avoids remaining liquid because the suction is not enough or the reason of refluence drips other places to play the purpose that the environmental cleaning is clean and tidy in protection human safety or assurance experiment.

Description

Liquid-transfering gun

Technical Field

The utility model relates to a liquid removes the field, more specifically relates to a liquid-transfering gun.

Background

In the fields of medical treatment, medicine, gene and protein research, biological research, medicine development laboratories and other biotechnology application fields, it is often necessary to manipulate laboratory samples in various laboratory operating protocols by using a pipette, which uses the pipette to suck a certain volume of liquid into the pipette and then to dispense the liquid into one or more dispensing volumes, so that the pipette is widely used in laboratories.

Therefore, it is necessary to provide a pipette that solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid-transfering gun for overcoming at least one defect (insufficiency) of the prior art.

In order to solve the technical problem, the technical scheme of the utility model as follows: a liquid-transfering gun comprises a liquid-transfering gun body, a liquid-transfering gun head, a liquid-storing cavity arranged in the liquid-transfering gun body and a backflow preventing device;

the pipette comprises a pipette head, a pipette body, a liquid storage cavity, a liquid transfer gun body and a liquid transfer gun body, wherein the pipette head is arranged in the pipette body;

prevent that flow reversing arrangement encircles and sets up on the inner wall of liquid-transfering gun head, through set up on the inner wall of liquid-transfering gun head is encircleed to prevent flow reversing arrangement, can effectually hold back remaining liquid to liquid-transfering gun head inner wall, avoid remaining liquid because the suction is not enough or the reason of refluence drips other places to play protection human safety or guarantee the clean and tidy purpose of experimental environment.

Further, prevent the refluence device including preventing the refluence hook with prevent down the arch, prevent that the refluence hook encircles and sets up on the inner wall of liquid-transfering gun head, prevent down the arch and set up in the hook point department of preventing the refluence hook, through preventing the refluence hook with prevent down bellied design, can effectually hold back the liquid on the liquid-transfering gun head inner wall, avoid liquid to flow backwards to other places to people's safety has been ensured, has also guaranteed moving the clean and tidy of liquid.

Furthermore, pipette head, prevent the hook that flows backwards and prevent the protruding formula structure as an organic whole that falls, the pipette head of integral type structure, prevent the hook that flows backwards and prevent the protrusion that flows backwards can be convenient for make, prevent in the use, lead to preventing the hook that flows backwards and prevent the protruding aversion of flowing backwards owing to vibrate, also simplified installation procedure simultaneously.

Further, pipette head, prevent the backward flow hook and prevent that the backward flow arch all adopts the COC material to make, at the in-service use in-process, pipette head, prevent the backward flow hook and prevent that the backward flow arch also can replace with other materials, it is all within the protection scope of the utility model.

Furthermore, a measuring meter is arranged on the liquid storage cavity, liquid in the liquid storage cavity can be monitored through the design of the measuring meter, required liquid can be sucked according to needs, and the using amount can be controlled conveniently.

Furthermore, be equipped with the external screw thread interface on the intercommunication interface, be equipped with on the liquid-transfering gun head with external screw thread interface assorted internal thread, the liquid-transfering gun head passes through the internal thread to be fixed on the external screw thread interface on the intercommunication interface, through the connected mode of internal and external screw thread, can be simple fix the liquid-transfering gun head on the liquid-transfering gun body, convenient the dismantlement.

Furthermore, the top of the liquid transfer gun body is provided with a pressing suction head, and through the design of the pressing suction head, when liquid needs to be sucked, the liquid can be conveniently sucked by only pressing down the pressing suction head to discharge air in the pressing hair washing process and utilizing the pressure difference.

Furthermore, the backflow prevention device is at least one, and in the actual use process, the number of the backflow prevention device can be set as required, which is within the protection scope of the utility model.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

(1) the utility model discloses a liquid-transfering gun through encircle the anti-backflow device and set up on the inner wall of liquid-transfering gun head, can effectually hold back remaining liquid to liquid-transfering gun head inner wall, avoids remaining liquid because the suction is not enough or the reason of refluence drips other places to play the purpose that the protection human safety or assurance experiment environment are clean and tidy.

(2) The utility model discloses a liquid-transfering gun through preventing the refluence hook with prevent the bellied design of flowing backwards, can effectually hold back the liquid on the liquid-transfering gun head inner wall, avoids liquid to flow backwards to other place to ensure people's safety, also guaranteed move the clean and tidy of liquid.

Drawings

Fig. 1 is a schematic view of the structure of the liquid-transfering gun of the present invention.

Fig. 2 is a schematic structural view of a cross-sectional view of a pipette tip of the present invention.

Fig. 3 is an enlarged view of the backflow prevention device of the present invention.

In the figure, 1 is a pipette tip body, 2 is a pipette tip, 3 is a liquid storage cavity, 4 is a backflow prevention device, 5 is a communication interface, 6 is a backflow prevention hook, 7 is a backflow prevention bulge, 8 is a measuring meter, and 9 is a pressing suction head.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art. The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1-2, a pipette comprises a pipette body 1, a pipette head 2, a liquid storage cavity 3 arranged in the pipette body 1, and a backflow prevention device 4; a communicating interface 5 is arranged on the pipette body 1, one end of the communicating interface 5 is connected with the liquid storage cavity 3, and the other end is communicated with the pipette head 2; prevent that flow reversal device 4 encircles the setting on the inner wall of liquid-transfering gun head 2, through set up on the inner wall of liquid-transfering gun head 2 to prevent flow reversal device 4 encircleing, can effectually hold back the remaining liquid of liquid-transfering gun head 2 inner wall, avoid remaining liquid because the suction is not enough or the reason of refluence drips other places to play the purpose of protection human safety or assurance experimental environment neatly.

As shown in figure 3, the backflow prevention device 4 comprises a backflow prevention hook 6 and a backflow prevention bulge 7, the backflow prevention hook 6 is arranged on the inner wall of the pipette tip 2 in a surrounding manner, the backflow prevention bulge 7 is arranged at the hook tip of the backflow prevention hook 6, and through the design of the backflow prevention hook 6 and the backflow prevention bulge 7, liquid on the inner wall of the pipette tip can be effectively intercepted, and backflow to other places is avoided, so that the safety of people is ensured, and the neatness of pipetting is also ensured, in the utility model, the pipette tip 2, the backflow prevention hook 6 and the backflow prevention bulge 7 are of an integrated structure, the pipette tip 2, the backflow prevention hook 6 and the backflow prevention bulge 7 of the integrated structure can be conveniently manufactured, the backflow prevention hook and the backflow prevention bulge are prevented from shifting due to oscillation in the use process, and the installation steps are also simplified, wherein, the pipette tip 2, the backflow prevention hook 6 and the backflow prevention bulge prevention 7 are all made of COC materials, in the in-service use in-process, the pipette tip, prevent the refluence hook and prevent that the backward projection also can replace with other materials, it is all within the utility model discloses a within the scope of protection.

In the utility model, a measuring meter 8 is arranged on a liquid storage cavity 3, the liquid in the liquid storage cavity can be monitored through the design of the measuring meter 8, the required liquid can be absorbed according to the requirement, the quantity is convenient to control, in addition, an external thread interface is arranged on a communication interface, an internal thread matched with the external thread interface is arranged on the liquid transfer gun head, the liquid transfer gun head is fixed on the external thread interface on the communication interface through the internal thread, the liquid transfer gun head can be simply fixed on a liquid transfer gun body through the connection mode of the internal thread and the external thread, the disassembly is convenient, a pressing suction head 9 is arranged at the top of the liquid transfer gun body 1, through the design of the pressing suction head 9, when the liquid is required to be absorbed, the suction head is only required to be pressed downwards to discharge the air in the pressing washing head, the liquid can be conveniently absorbed by utilizing the pressure difference, in the utility model, in the in-service use process, can set up the quantity that prevents the refluence device as required, it is all within the utility model discloses a within the protection scope.

Example one

In this embodiment, the backflow prevention device is one and is arranged at the inner side of the bottom of the pipette head, when the pipette head is inserted into liquid to drive the liquid, the backflow prevention device is not immersed into the liquid, at the moment, only the suction head needs to be pressed down to quickly discharge air so as to suck the liquid, the volume of the liquid can be measured in the measurer, when the liquid needs to be transferred for testing, the residual liquid in the pipette head can drop to the ground or a desk due to the insufficient liquid level tension in the inner wall of the existing pipette head, so that pollution and waste are caused, even corrosive liquid can cause harm to a human body, and through the arrangement of the backflow prevention hook, a groove can be formed between the backflow prevention hook and the inner wall of the pipette head, so that the effect of intercepting is achieved, and the backflow prevention protrusion can be used for reinforcing the tip part of the backflow prevention hook to avoid long-term use, the backflow prevention hook is deformed.

In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pipetting gun comprises a pipetting gun body, a pipetting gun head and a liquid storage cavity arranged in the pipetting gun body, and is characterized by also comprising a backflow prevention device;

the backflow prevention device is arranged on the inner wall of the pipette head in a surrounding mode.

2. The pipette gun of claim 1 wherein the backflow prevention device comprises a backflow prevention hook and a backflow prevention protrusion, the backflow prevention hook is circumferentially arranged on the inner wall of the pipette head, and the backflow prevention protrusion is arranged at the hook tip of the backflow prevention hook.

3. The pipette gun of claim 2 wherein the pipette tip, the anti-backup hook and the anti-backup projection are of a unitary construction.

4. The pipette gun of claim 2 wherein the pipette tip, the anti-backup hook and the anti-backup projection are made of COC material.

5. The pipette gun of claim 1 wherein the reservoir chamber has a meter disposed thereon.

6. The pipette gun according to claim 1, wherein the communicating port is provided with an external thread port, the pipette tip is provided with an internal thread matched with the external thread port, and the pipette tip is fixed on the external thread port of the communicating port through the internal thread.

7. The pipette gun of claim 1 wherein the pipette gun body is provided with a pressing tip at the top.

8. The pipette gun of claim 1 wherein the backflow prevention device is at least one.