CN202398371U - Transfer pipette - Google Patents

Abstract

The utility model relates to a pipette, which belongs to the technical field of chemical equipment. The utility model comprises a main pipe, a side pipe, a button, a spring, a rope, a support piece, a ball, and a round platform plug. A side pipe is formed on the upper side of the main pipe, and a round table-shaped plug is installed in the side pipe. The upper end of the main pipe is equipped with a ball, and the upper end of the ball is equipped with a support piece. The spring is connected to the button, and the corner of the button is connected to the ball through a rope. The utility model has the advantages of convenient operation, precise control, simple structure and convenient taking and discharging of liquid.

Description

a pipette

technical field

The utility model relates to a pipette, which belongs to the technical field of chemical equipment.

Background technique

At present, the process of using the pipette in the chemical test is roughly as follows: take the ear washing ball with the left hand to suck the solution from the upper nozzle of the pipette, and when the liquid level rises above the required scale, quickly block the nozzle with the right index finger , Release the right index finger slightly when discharging the liquid to make the liquid level drop slowly. In the process of taking the liquid, when the ear ball is removed to block it with the right index finger, if the action is not fast, the liquid will be insufficient due to the rapid drop of the liquid; It is difficult to control the amount of liquid in the liquid pipe process; accurate liquid extraction requires high finger operation of the operator and is not easy to complete.

Contents of the invention

The purpose of the utility model is to provide a pipette with convenient operation, precise control and simple structure.

The technical scheme of the utility model is: a pipette, comprising a graduated main pipe 1, a side pipe 2, a button 3, a spring 4, a rope 5, a support piece 6, a ball 7, and a round-shaped stopper 8. One side of the upper part of the main pipe 1 is shaped on a side pipe 2 with an inclined angle, and a truncated round plug 8 is housed in the side pipe 2 . The upper end of the main pipe 1 is equipped with a ball 7, and the pipe on the upper part of the ball 7 is made into a structure with a certain angle of inclination (the top is wide and the bottom is narrow). A plurality of small holes are arranged on the support sheet 6 (to balance the pressure inside and outside the pipe). Button 3 corners are connected with ball 7 by rope 5.

The side pipe 2 is a tubular structure with a wide top and a narrow bottom, and its connection with the main pipe 1 is a narrow end.

The diameter of the button 3 is greater than the diameter of the mouth of the main pipe 1 .

When in use, hold the ear cleaning ball tightly first, discharge the air in the ball, insert the tip of the ear cleaning ball into the side tube 2, be careful not to leak air, and slowly loosen your fingers, the one-way plug 8 will be sucked out There is a gap at one point and the liquid is sucked into the main pipe 1. When the liquid level rises above the required scale, remove the ear wash ball, and the one-way plug 8 will re-plug the side pipe 2 due to gravity, so that the liquid cannot flow. When adjusting the liquid level, press the button 3 slightly, and the outer part of the rope 5 connected to the button will be pulled down, causing the rope 5 in the pipe to become shorter and pull up the small ball 7 to move upward slightly, forming a gap between the small ball 7 and the inner wall of the main pipe 1 The small gap allows the liquid to flow out slowly, and the liquid level can be adjusted precisely; when discharging the liquid, press the button 3 completely to increase the gap to speed up the liquid's descending speed. Due to gravity, it will naturally fall and plug the main tube.

The beneficial effects of the utility model are: convenient operation, precise control, simple structure, and convenient liquid extraction.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Each label in the figure is: 1: main pipe, 2: side pipe, 3: button, 4: spring, 5: rope, 6: support sheet, 7: round ball, 8: round platform plug.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model will be further described, but the content of the utility model is not limited to said range.

Example 1: A pipette, including a graduated main tube 1, a side tube 2, a button 3, a spring 4, a rope 5, a support piece 6, a ball 7, and a cone-shaped stopper 8. One side of the upper part of the main pipe 1 is shaped on a side pipe 2 with an inclined angle, and a truncated round plug 8 is housed in the side pipe 2 . The upper end of the main pipe 1 is equipped with a ball 7, and the pipe on the upper part of the ball 7 is made into a structure with a certain angle of inclination (the top is wide and the bottom is narrow). A plurality of small holes are arranged on the support sheet 6 (to balance the pressure inside and outside the pipe). Button 3 corners are connected with ball 7 by rope 5. The diameter of button 3 is greater than the diameter of main pipe 1 mouth. The side pipe 2 is a tubular structure with a wide top and a narrow bottom, and the connection between the side pipe 2 and the main pipe 1 is a narrow end.

Claims (4)

1. a pipette is characterized in that: comprise the person in charge (1), side pipe (2), button (3), spring (4), rope (5), support chip (6), ball (7), circular platform type stopper (8); Be responsible for (1) top one side and be shaped on side pipe (2); Circular platform type stopper (8) is housed in the side pipe (2); Be responsible for (1) inner upper end ball (7) is housed; Support chip (6) is equipped with in ball (7) upper end, is connected with button (3) through spring (4), and button (3) edge is connected with ball (7) through rope (5).

2. pipette according to claim 1 is characterized in that: side pipe (2) is a tubular structure wide at the top and narrow at the bottom, and it is narrow end with being responsible for (1) junction.

3. pipette according to claim 1 and 2 is characterized in that: support chip (6) is gone up porose.

4. pipette according to claim 3 is characterized in that: button (3) diameter is greater than the diameter of being responsible for (1) mouth.