Pipette with waste liquid collecting bottle

Abstract

The utility model discloses a pipette with a waste liquid collecting bottle, relates to the technical field of pipettes, and solves the problems in the prior art that experimental reagents are easily polluted and the safety of experimenters is threatened when the conditions of suck-back and overflow occur in the pipetting process. A transfer pipette with a waste liquid collecting bottle comprises a transfer pipette, the transfer pipette comprises a pipette body and a pipette opening connected to the side wall of the upper end of the pipette body, the waste liquid collecting bottle is arranged at the lower end of the pipette opening, the pipette opening is connected with the waste liquid collecting bottle through a rubber hose, and the pipette opening is connected with the rubber hose through a spiral pipe cap; the waste liquid collecting bottle comprises a bottle cap and a bottle body, the bottle cap is in threaded connection with the bottle body, the bottle cap is connected with a feeding pipe and a one-way exhaust port, the rubber hose is inserted into the feeding pipe, and the feeding pipe is connected with a one-way valve. The electric pipettor has the beneficial effect that sample pollution or electric pipettor damage caused by overfilling and overflowing can be prevented when liquid exceeding a measuring range is sucked.

Description

Technical Field

[0001] The utility model relates to the technical field of pipettes, in particular to a pipette with a waste liquid collecting bottle. Background Art

[0002] In the field of biochemistry, the tools used to accurately measure and transfer liquids in laboratory operations mainly use pipettes and pipette guns. Pipettes and pipette guns are measuring instruments, mainly used to accurately transfer a certain volume of solution. Among them, the operation of the pipette gun is relatively simple, but its accuracy may be slightly lower, and its sealing, the depth of the tip under the liquid surface, the rebound speed, the liquid density, the operation and other factors may affect its accuracy. The pipette has high measurement accuracy, small error, and fewer influencing factors, and is suitable for various liquids.

[0003] A pipette is usually a slender glass tube with a bulged part in the middle, a pointed tip at the lower end and a marking line on the upper neck to indicate the exact volume taken. A pipette is mainly used to accurately transfer solutions in titration analysis, or when the amount of test solution added needs to be controlled in the reaction. It has high precision and common specifications include 5mL, 10mL, 25mL, 50mL and 75mL.

[0004] At present, the commonly used pipettes are straight tubes, which are used to absorb and release liquids. When absorbing liquids, the top of the pipette is installed on the electric pipette, and the liquid is sucked from the lower end of the pipette by the suction force of the electric pipette. A small amount of cotton is plugged at the top of the pipette. When using it, the operator needs to pay attention to the liquid level of the inhaled liquid at all times. Back-suction and overflow are prone to occur, and excessive absorption of liquid is very likely to occur, resulting in contamination of experimental reagents and threats to the safety of experimenters. When discarding liquid, the waste liquid is discarded in the waste liquid tank, which is prone to liquid splashing and causing cross contamination.

[0005] Therefore, the utility model proposes a pipette with a waste liquid collection bottle to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a pipette with a waste liquid collection bottle, which is used to solve the problems in the prior art that when back suction and overflow occur during the pipetting process, the experimental reagents are easily contaminated and the safety of the experimenters is threatened.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A pipette with a waste liquid collection bottle comprises a pipette, wherein the pipette comprises a tube body and a pipe mouth connected to the side wall of the upper end of the tube body, a waste liquid collection bottle is arranged at the lower end of the pipe mouth, the pipe mouth is connected to the waste liquid collection bottle through a rubber hose, and the pipe mouth is connected to the rubber hose through a spiral pipe cap; the waste liquid collection bottle comprises a bottle cap and a bottle body, the bottle cap is threadedly connected to the bottle body, a feed pipe and a one-way exhaust port are connected to the bottle cap, the rubber hose is inserted in the feed pipe, the lower end of the feed pipe extends to the inside of the bottle body, and a one-way valve is connected to the feed pipe.

[0009] By adopting the above technical solution, when sucking liquid beyond the range, waste liquid can be collected through the waste liquid collection bottle to prevent overflow and cause sample contamination or damage to the electric pipette, avoid excessive suction of liquid, avoid contamination of experimental reagents and safety threats to experimenters.

[0010] Furthermore, a cotton core is arranged in the connecting head of the tube body.

[0011] By adopting the above technical solution, the normal use of the pipette can be guaranteed, and the entry of bacteria into the pipette can be effectively prevented.

[0012] Furthermore, a plurality of scale lines are evenly arranged on the outer wall of the tube body along the longitudinal direction.

[0013] By adopting the above technical solution, the experimenter can accurately control the volume of the liquid taken, thereby improving the accuracy and reliability of the experimental results.

[0014] Furthermore, the tube body and the tube mouth are both made of polypropylene, and the tube mouth is arranged on the tube body at an angle downward.

[0015] By adopting the above technical solution, the liquid falls along the pipe mouth, and the pipe mouth is arranged on the pipe body to be inclined downward, thereby avoiding the backflow of the liquid.

[0016] Furthermore, the end of the pipe mouth is arranged in a conical convex shape, a baffle is connected to the middle of the pipe mouth, the spiral pipe cap is threadedly connected to the baffle, and a plurality of notches are evenly opened at the end of the spiral pipe cap.

[0017] By adopting the above technical solution, the stability of the rubber hose fixation can be ensured, and the entire rubber hose can be disassembled and sterilized, reducing the risk of contamination.

[0018] Furthermore, a plurality of anti-slip lines are evenly arranged on the bottle cap.

[0019] By adopting the above technical solution, it is convenient to separate the bottle cap from the bottle body and to process the waste liquid.

[0020] Furthermore, a sealing sheet is connected between the bottle cap and the bottle body.

[0021] By adopting the above technical solution, the tight connection between the bottle cap and the bottle body can be ensured, thus preventing the waste liquid from posing a safety threat to the experimenters.

[0022] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. The utility model can collect waste liquid through the waste liquid collection bottle when the liquid exceeds the measuring range, so as to prevent the sample from being contaminated or the electric pipette from being damaged due to overflow, avoid excessive liquid absorption, avoid the contamination of experimental reagents and the threat to the safety of experimental personnel, and prevent cross contamination caused by liquid splashing.

[0024] 2. The utility model is easy to operate and can be used for liquid addition and replenishment operations as well as liquid abandonment operations. It can quickly abandon liquid, reduce operation time, reduce pollution risks, avoid splashing, and avoid the risk of cross contamination. It can complete a large amount of liquid abandonment work in a short time and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a vertical schematic diagram of the utility model;

[0026] Figure 2 It is the front view of the utility model;

[0027] Figure 3 It is a partial cross-sectional schematic diagram of the utility model;

[0028] Figure 4 for Figure 3 A partial enlarged schematic diagram of part A;

[0029] Figure 5 for Figure 3 A partial enlarged schematic diagram of part B;

[0030] In the figure: 1. electric pipette; 2. tube body; 3. tube mouth; 4. rubber hose; 5. bottle cap; 6. bottle body; 7. anti-slip pattern; 8. sealing sheet; 9. feed tube; 10. one-way valve; 11. one-way exhaust port; 12. connector; 13. cotton core; 14. scale line; 15. baffle; 16. spiral tube cap; 17. notch. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0032] In this application, the directions or positional relationships indicated by the terms "upper", "inner", "outer", "middle", etc. are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0033] like Figure 1 and Figure 2 As shown, a pipette with a waste liquid collection bottle includes a pipette, and the pipette includes a tube body 2 and a nozzle 3 connected to the upper side wall of the tube body 2, and a cotton core 13 is arranged in the connector 12 of the tube body 2. This ensures the normal use of the pipette and effectively prevents bacteria from entering the pipette. The outer wall of the tube body 2 is evenly provided with a plurality of scale lines 14 along the longitudinal direction. The experimenter can accurately control the volume of the liquid taken, thereby improving the accuracy and reliability of the experimental results. The tube body 2 and the nozzle 3 are both made of polypropylene, and the nozzle 3 is arranged on the tube body 2 at an angle downward. When the liquid exceeding the range is sucked, the liquid falls along the nozzle 3, and the nozzle 3 is arranged on the tube body 2 at an angle downward, thereby avoiding the backflow of the liquid.

[0034] like Figure 3 and Figure 4 As shown, a waste liquid collection bottle is arranged at the lower end of the nozzle 3, and the nozzle 3 is connected to the waste liquid collection bottle through a rubber hose 4, and the nozzle 3 is connected to the rubber hose 4 through a spiral cap 16; the end of the nozzle 3 is arranged in a conical convex shape, and a baffle 15 is connected to the middle of the nozzle 3, and the spiral cap 16 is threadedly connected to the baffle 15, and a plurality of notches 17 are evenly opened at the end of the spiral cap 16. The conical convex shape of the end of the nozzle 3 plays a supporting and fixing role for the rubber hose 4, and then the spiral cap 16 is twisted, and the spiral cap 16 is threadedly connected to the baffle 15, and then the spiral cap 16 moves relative to the baffle 15, and the spiral cap 16 fixes the end of the rubber hose 4, ensuring the stability of the fixation of the rubber hose 4. At the same time, the whole can be disassembled and sterilized, reducing the risk of contamination.

[0035] like Figure 3 and Figure 5As shown, the waste liquid collection bottle includes a bottle cap 5 and a bottle body 6, the bottle cap 5 is threadedly connected to the bottle body 6, a feed pipe 9 and a one-way exhaust port 11 are connected to the bottle cap 5, a rubber hose 4 is inserted into the feed pipe 9, the lower end of the feed pipe 9 extends to the inside of the bottle body 6, and a one-way valve 10 is connected to the feed pipe 9. A plurality of anti-slip grooves 7 are evenly arranged on the bottle cap 5. A sealing sheet 8 is connected between the bottle cap 5 and the bottle body 6. This avoids the backflow of liquid and the contamination of experimental reagents, and waste liquid can be collected through the waste liquid collection bottle, eliminating cross contamination caused by liquid splashing, and avoiding excessive absorption of liquid. At the same time, the liquid can be discarded quickly, reducing the operation time, reducing the risk of pollution, and can complete a large amount of liquid disposal in a short time, thereby improving work efficiency.

[0036] The working process of the utility model is:

[0037] When liquid addition and replenishment operations are required, the pipette nozzle 3 is connected to the rubber hose 4, and the end of the nozzle 3 is conical and convex to support and fix the rubber hose 4, and then the spiral cap 16 is twisted, the spiral cap 16 is threadedly connected to the baffle 15, and then the spiral cap 16 moves relative to the baffle 15, and the spiral cap 16 fixes the end of the rubber hose 4. The other end of the rubber hose 4 is connected to a waste liquid collection bottle for collecting waste liquid; the top end of the pipette is connected to the electric pipette 1, and then the liquid is sucked from the lower end of the tube body 2 by the suction force of the electric pipette 1. When the liquid exceeds the range, the liquid falls along the nozzle 3 and falls into the waste liquid collection bottle through the rubber hose 4, preventing overfilling and overflowing to cause sample contamination or damage to the electric pipette 1.

Claims

1. A pipette with a waste liquid collection bottle, comprising a pipette, characterized in that: The pipette comprises a tube body (2) and a tube mouth (3) connected to the side wall of the upper end of the tube body (2); a waste liquid collection bottle is arranged at the lower end of the tube mouth (3); the tube mouth (3) is connected to the waste liquid collection bottle through a rubber hose (4); the tube mouth (3) is connected to the rubber hose (4) through a screw cap (16); the waste liquid collection bottle comprises a bottle cap (5) and a bottle body (6); the bottle cap (5) is threadedly connected to the bottle body (6); a feed pipe (9) and a one-way exhaust port (11) are connected to the bottle cap (5); the rubber hose (4) is inserted into the feed pipe (9); the lower end of the feed pipe (9) extends to the inside of the bottle body (6); and a one-way valve (10) is connected to the feed pipe (9).

2. A pipette with a waste liquid collection bottle according to claim 1, characterized in that: A cotton core (13) is arranged in the connector (12) of the tube body (2).

3. A pipette with a waste liquid collection bottle according to claim 2, characterized in that: The outer wall of the tube body (2) is evenly provided with a plurality of scale lines (14) along the longitudinal direction.

4. A pipette with a waste liquid collection bottle according to claim 3, characterized in that: The tube body (2) and the tube opening (3) are both made of polypropylene, and the tube opening (3) is arranged on the tube body (2) in an inclined downward direction.

5. A pipette with a waste liquid collection bottle according to claim 4, characterized in that: The end of the pipe mouth (3) is arranged in a conical convex shape, a baffle (15) is connected to the middle of the pipe mouth (3), the spiral pipe cap (16) is threadedly connected to the baffle (15), and a plurality of notches (17) are evenly formed at the end of the spiral pipe cap (16).

6. A pipette with a waste liquid collection bottle according to claim 1, characterized in that: The bottle cap (5) is evenly provided with a plurality of anti-slip lines (7).

7. A pipette with a waste liquid collection bottle according to claim 6, characterized in that: A sealing sheet (8) is connected between the bottle cap (5) and the bottle body (6).

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