Pipettor air tightness detection device

Abstract

The utility model relates to the technical field of pipettor air tightness detection, and discloses a pipettor air tightness detection device, which comprises a pressure box, a sealing mechanism arranged at the top of the pressure box, the sealing mechanism is communicated with the pressure box, a reagent tube arranged at the top of the pressure box, the reagent tube is communicated with the pressure box, and the pressure box is communicated with the sealing mechanism. One side of the water adding pipe is communicated with a water tank, and the bottom of the pressure tank is communicated with a drainage pipe; according to the utility model, by increasing the number of pipettes for single air tightness detection by an experimenter, time and labor cost can be saved, and the pipettes required by an experiment can be quickly prepared; and during single-time detection, whether the same batch of pipettors have the same defect or excellent air tightness can be found, and the consistency between the pipettors can be verified, so that the quality control of the pipettors is relatively stable, and the accuracy and reliability of an experimental result can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection of pipettes, in particular to an air tightness detection device for pipettes. Background Art

[0002] The air-tightness test of pipettes is one of the common quality control steps in the laboratory. It ensures that the pipette can accurately and precisely absorb and release liquids during use to avoid leakage or errors. The air-tightness test device usually consists of a closed container and a pipette. Based on the observed situation, it can be preliminarily judged whether the air-tightness of the pipette is good. If problems are found in the pipette, it should be replaced or repaired in time to ensure the accuracy and reliability of the experimental operation.

[0003] Testing multiple pipettes at one time can save time and labor costs. In a laboratory environment, multiple pipettes are usually required for operation. Testing one by one will consume a lot of time and human resources. Testing multiple pipettes at one time can improve efficiency and reduce the time cost of testing one by one. Testing multiple pipettes at one time can help laboratory personnel compare their performance, which helps to find out whether there is a specific model or batch of pipettes that performs better in terms of airtightness.

[0004] The patent with the publication number CN217466143U currently discloses a pipette air tightness detection device, including a pipette to be tested, a reagent bottle, a bottle stopper, a vacuum pressure gauge, an exhaust pipe, a test tube, a drive box and a drive assembly. The reagent bottle contains distilled water, and the bottle stopper is arranged at the bottle mouth of the reagent bottle. One end of the exhaust pipe penetrates the bottle stopper and extends into the reagent bottle and is located above the liquid level of the distilled water. One end of the test tube penetrates the bottle stopper and extends into the reagent bottle and is immersed in the distilled water. The pipette to be tested is connected to the other end of the test tube and the drive box and one side of the reagent bottle. Although the above device solves the problem of measuring the vacuum degree in the reagent bottle.

[0005] However, the above technical solution still has the following problems:

[0006] When the airtightness detection device is testing, only one pipette can be tested at the same time. The number of pipettes usually used in the laboratory is huge, and the number of single tests is too small, which reduces the detection efficiency of the experimenters and consumes a lot of time and human resources. Moreover, by testing one by one, it is impossible to observe the airtightness of the pipettes in the same batch, and it is impossible to understand the performance of the pipettes in the same batch, and the experimental data is prone to deviation. Summary of the invention

[0007] In view of the deficiencies of the prior art, the utility model provides a pipette air tightness detection device to at least solve one of the problems raised by the background technology, such as: increasing the number of pipettes that can be subjected to a single air tightness detection.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipette air tightness detection device, including a pressure box, a sealing mechanism is installed on the top of the pressure box, the sealing mechanism and the pressure box are connected, a reagent tube is installed on the top of the pressure box, the reagent tube and the pressure box are connected, a water adding pipe is installed above the reagent tube, one side of the water adding pipe is connected to a water tank, and the bottom of the pressure box is connected to a drain pipe.

[0009] Furthermore, the sealing mechanism includes a soft rubber ring, a sealing plate, a spring and a connecting rope. A pipe insertion port is opened on the top of the pressure box, a soft rubber ring is installed on the inner ring wall of the pipe insertion port, a sealing plate is fitted and connected to the bottom of the soft rubber ring, a symmetrical spring is fixedly connected to one side of the sealing plate surface, and the other end of the spring is fixedly connected to the inner wall of the pressure box, a connecting rope is fixedly connected to the other side of the sealing plate surface, and the other end of the connecting rope is fixedly connected to the inner wall of the pressure box.

[0010] Furthermore, a test tube opening is provided on the top of the pressure box and is fitted with the outside of the reagent tube. One end of the reagent tube extends deep into the pressure box, close to the bottom of the pressure box, and the other end is connected to a wide bottle opening, which is aligned with the water outlet of the water filling pipe.

[0011] Furthermore, the outside of the water supply pipe is connected to a water inlet valve, and the outside of the drain pipe is connected to a drain valve.

[0012] Furthermore, the top of the water tank is connected to a drug delivery port.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model can save time and labor costs by increasing the number of pipettes that the experimenter can test for air tightness at a single time, and quickly prepare the pipettes needed for the experiment; and when a single test is performed, it can be found whether pipettes in the same batch have the same defects or excellent air tightness performance, and the consistency between them can be verified, indicating that their quality control is relatively stable, which helps to ensure the accuracy and reliability of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of one side of the pressure box of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the reagent tube of the utility model.

[0018] In the figure: 1. pressure box; 101. intubation port; 102. test tube port; 2. sealing mechanism; 201. soft rubber ring; 202. sealing plate; 203. spring; 204. connecting rope; 3. reagent tube; 301. wide bottle mouth; 4. water adding pipe; 5. water tank; 6. drain pipe; 7. water inlet valve; 8. drain valve; 9. drug delivery port. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figures 1 to 3 As shown, a pipette air tightness detection device includes a pressure box 1, a sealing mechanism 2 is installed on the top of the pressure box 1, the sealing mechanism 2 is connected to the pressure box 1, a reagent tube 3 is installed on the top of the pressure box 1, the reagent tube 3 is connected to the pressure box 1, a water adding pipe 4 is installed above the reagent tube 3, one side of the water adding pipe 4 is connected to a water tank 5, and the bottom of the pressure box 1 is connected to a drain pipe 6.

[0021] like Figure 1 As shown, a pipette air tightness detection device in the utility model is similar in structure to an existing pipette air tightness detection device, such as the pipette air tightness detection device disclosed in the patent with publication number CN217466143U. The main improvement of the utility model is to improve the detection efficiency of the experimenter, such as Figures 1 to 3 As shown, when a pipette air tightness detection device in the utility model is used, the pipette is inserted into the sealing mechanism 2, and the sealing mechanism 2 wraps the pipette so that there is no gap between the pipette and the pressure box 1, and the drain pipe 6 is closed so that only the reagent tube 3 of the pressure box 1 is connected to the outside, and the water supply pipe 4 is opened, and the colored reagent in the water tank 5 flows into the reagent tube 3, part of the colored reagent is stuck at the upper end of the reagent tube 3, and part of it enters the pressure box 1 and is stuck at the lower end of the reagent tube 3, forming an air tightness detection liquid seal method. This method proves the air tightness of the device by injecting a certain amount of liquid into the reagent tube 3 and observing the position of the colored reagent stuck at the lower end of the reagent tube 3. If the position of the colored reagent is stable, it means that the air tightness of the pipette is good. If the colored reagent production decreases, it means that the pipette is leaking. When the pipette is unplugged, the sealing mechanism 2 can immediately seal the connection between the pipette and the pressure box 1 to maintain a liquid seal environment. The pipettes can be unplugged one by one to find the pipette with the problem. After testing, the drain pipe 6 can be opened to discharge the colored reagent in the pressure box 1, which is convenient for the experimenter to conduct the next test.

[0022] like Figure 2As shown, the sealing mechanism 2 includes a soft rubber ring 201, a sealing plate 202, a spring 203 and a connecting rope 204. A pipe insertion port 101 is opened on the top of the pressure box 1, and a soft rubber ring 201 is installed on the inner ring wall of the pipe insertion port 101. The bottom of the soft rubber ring 201 is fitted with a sealing plate 202. A symmetrical spring 203 is fixedly connected to one side of the surface of the sealing plate 202, and the other end of the spring 203 is fixedly connected to the inner wall of the pressure box 1. A connecting rope 204 is fixedly connected to the other side of the surface of the sealing plate 202, and the other end of the connecting rope 204 is fixedly connected to the inner wall of the pressure box 1.

[0023] Specifically, through this arrangement, when the pipette is inserted into the pressure box 1, the soft rubber ring 201 seals the connection between the pipette and the insertion port 101 to ensure the pressure in the pressure box 1, and the sealing plate 202 is pushed open by the pipette to connect the pipette and the pressure box 1; when the pipette is pulled out, the sealing plate 202 is pulled by the spring 203 to quickly seal the open part of the insertion port 101 to ensure the pressure in the pressure box 1, and continue the liquid seal method experimental test.

[0024] like Figures 1 to 3 As shown, a test tube opening 102 is provided on the top of the pressure box 1 and is fitted and connected to the outside of the reagent tube 3. One end of the reagent tube 3 extends deep into the pressure box 1, close to the bottom of the pressure box 1, and the other end is connected to a wide bottle opening 301, which is aligned with the water outlet of the water adding pipe 4.

[0025] Specifically, by setting the wide bottle mouth 301 to form a funnel shape, only a portion of the colored reagent enters the liquid of the reagent tube 3 and is fixed to the bottom of the reagent tube 3 to form a liquid seal, which can detect whether the pipette is leaking.

[0026] like Figure 1 As shown, the outside of the water supply pipe 4 is connected to a water inlet valve 7, and the outside of the drain pipe 6 is connected to a drain valve 8.

[0027] Specifically, through this setting, the experimenter can control the drain valve 8 to ensure the pressure in the pressure box 1, so as to achieve the effect of detecting the pipette, and control the water inlet valve 7 to control the colored reagent entering the reagent tube 3 to be filled into the wide bottle mouth 301, so as to ensure that it can reach the volume required by the liquid sealing method.

[0028] like Figure 1 As shown, the top of the water tank 5 is connected to a drug delivery port 9.

[0029] Specifically, through this arrangement, medication can be administered to the water in the water tank 5 at the medication port 9, colored dyes for adjusting the color can be added or liquids of different densities can be added to detect the air tightness of the pipette at different densities, thereby improving the detection diversity of the pipette air tightness detection device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipette air tightness detection device, comprising a pressure box (1), Features: The pressure box (1) is provided with a sealing mechanism (2) on the top thereof, the sealing mechanism (2) and the pressure box (1) being connected, a reagent tube (3) being provided on the top thereof, the reagent tube (3) and the pressure box (1) being connected, a water supply tube (4) being provided above the reagent tube (3), one side of the water supply tube (4) being connected to a water tank (5), and a drainage tube (6) being connected to the bottom of the pressure box (1).

2. A pipette air tightness detection device according to claim 1, Features: The sealing mechanism (2) comprises a soft rubber ring (201), a sealing plate (202), a spring (203) and a connecting rope (204); a tube insertion port (101) is provided at the top of the pressure box (1); a soft rubber ring (201) is installed on the inner ring wall of the tube insertion port (101); a sealing plate (202) is fitted and connected to the bottom of the soft rubber ring (201); a symmetrical spring (203) is fixedly connected to one side of the surface of the sealing plate (202); the other end of the spring (203) is fixedly connected to the inner wall of the pressure box (1); a connecting rope (204) is fixedly connected to the other side of the surface of the sealing plate (202); the other end of the connecting rope (204) is fixedly connected to the inner wall of the pressure box (1).

3. A pipette air tightness detection device according to claim 1 or 2, Features: The top of the pressure box (1) is provided with a test tube opening (102) which is closely connected to the outside of the reagent tube (3); one end of the reagent tube (3) extends deep into the pressure box (1) and is close to the bottom of the pressure box (1); the other end is connected to a wide bottle opening (301); the wide bottle opening (301) is aligned with the water outlet of the water adding pipe (4).

4. A pipette air tightness detection device according to claim 1 or 2, Features: The outside of the water supply pipe (4) is connected to a water inlet valve (7), and the outside of the drainage pipe (6) is connected to a drainage valve (8).

5. A pipette air tightness detection device according to claim 3, Features: The outside of the water supply pipe (4) is connected to a water inlet valve (7), and the outside of the drainage pipe (6) is connected to a drainage valve (8).

6. A pipette air tightness detection device according to claim 1, 2 or 5, Features: The top of the water tank (5) is connected to a drug delivery port (9).

7. A pipette air tightness detection device according to claim 3, Features: The top of the water tank (5) is connected to a drug delivery port (9).

8. A pipette air tightness detection device according to claim 4, Features: The top of the water tank (5) is connected to a drug delivery port (9).

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