Colorimetric bottle with reagent

Abstract

The colorimetric bottle with the reagents comprises a bottle cap, a transparent bottle body, a rubber sleeve, a liquid outlet needle and a rotary plunger, the liquid outlet needle is a hollow needle head with the top end closed, a hole is formed in the side face and communicated with a hollow pipeline, and the rubber sleeve is arranged on the liquid outlet needle in a sleeved mode and can prevent the reagents from being polluted. The colorimetric bottle body is in threaded connection with the rotary plunger, a reagent can be pushed into the colorimetric bottle body through the liquid outlet needle by twisting the rotary plunger, the reagent can only be squeezed out and cannot be sucked in through the rubber sleeve, the rotary plunger can only be rotationally pushed and squeezed in one direction, and the rotary plunger can form vacuum and can return to the original position by rotating and retreating in the opposite direction; scale marks are arranged on the colorimetric bottle body, an indication mark is arranged on the outer side of the rotary plunger, the residual amount of the reagent can be read from the scale marks and the indication mark, and the residual amount can also be used as an alignment mark for pushing a circle, so that the error of reagent adding is reduced, and a more accurate result is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of analytical chemistry methods, and specifically relates to a colorimetric flask with self - contained reagents. Background Technique

[0002] Colorimetry is a commonly used analytical chemistry method for measuring the concentration of specific substances in a solution. Its principle is to add specific reagents to the solution to be measured. The reagents react with the target substance to cause a color change. By analyzing the absorption of a specific light wavelength caused by the color change measured by an analytical instrument, the concentration of the target substance is represented. It is mainly applied in the field of environmental monitoring, such as the concentration of various pollutants, such as heavy metals, organic substances, etc., to evaluate water quality, etc. It can also be used in the fields of biochemical analysis, food detection, industrial production, etc. Colorimetry is widely used in laboratories and industrial production due to its simple operation, high accuracy, good sensitivity, etc.

[0003] A common colorimetric analyzer uses a transparent colorimetric flask. First, the water sample to be measured is taken and put into a reagent bottle, then it is put into the tester to measure the background signal. Then the colorimetric flask is taken out, a specific reagent is added and shaken well, and then it is put into the tester to measure the current signal. The ratio of the two signals can be converted to the concentration of the substance to be measured.

[0004] In a colorimeter, there is usually a group or multiple groups of specific - wavelength LEDs and photodetectors. The LEDs emit light of a specific wavelength, which passes through the colorimetric flask body and the sample to be measured, and the photodetectors detect the light intensity signal.

[0005] In the traditional detection method, in the step of adding reagents, it is necessary to first add the water sample to the colorimetric flask, then cover it, put it into the colorimeter to measure the background signal, then take out the colorimetric flask, open the cover, tear open the reagent packet, pour in the reagent. Usually, during the process of taking out the colorimetric flask and opening the cover for the second time, it is easy to cause water sample contamination. When tearing open the reagent packet and adding the reagent, the reagent packet is easy to leave residues, resulting in insufficient reaction and measurement errors. Pouring in the reagent is also easy to spill, leading to measurement deviation. Therefore, we designed a colorimetric flask with self - contained reagents to solve a series of problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a colorimetric flask with self - contained reagents to solve the problems raised in the above - mentioned background technique.

[0007] In order to solve the above - mentioned technical problems, the utility model provides the following technical solutions:

[0008] A colorimetric flask with a self - contained reagent. The colorimetric flask includes a rotating plunger, an outlet needle rubber sleeve, a colorimetric flask body and a bottle cap. The rotating plunger is threadedly connected to the colorimetric flask body. The top of the hollow outlet needle is closed, and the side of the outlet needle has an opening connected to a hollow pipe. The bottom of the open end of the outlet needle is flush with the bottom of the colorimetric flask body. The outlet needle penetrates into the colorimetric flask body, and the outlet needle can introduce the reagent into the colorimetric flask body. The rubber sleeve is sleeved on the outlet needle, and the rubber sleeve closes the side opening of the outlet needle. The bottle cap is threadedly connected to the colorimetric flask body.

[0009] By twisting the rotating plunger, the reagent flows into the colorimetric flask body through the outlet needle. The rubber sleeve is sleeved on the outlet needle. When the positive pressure is greater than the pressure of the rubber sleeve wrapping, the liquid or fluid reagent can be extruded through the side opening. Usually, the side opening is closed by the rubber sleeve to prevent the reagent from being contaminated. Due to the existence of the rubber sleeve, the reagent can only be extruded and cannot be sucked in. Therefore, the rotating plunger can only be rotated and pushed in one direction. If the rotating plunger is rotated backward, a vacuum will be formed and the rotating plunger will return to its original position.

[0010] Further, a threaded cylinder is provided outward at the bottom of the colorimetric flask body. The threaded cylinder, the bottom of the colorimetric flask body and the top of the plunger of the rotating plunger form a reagent pre - storage cavity. The cavity of the colorimetric flask body is a measured sample cavity. The reagent pre - storage cavity and the measured sample cavity are connected by the outlet needle.

[0011] The liquid or fluid reagent is first stored in the reagent pre - storage cavity. When measurement is needed, then by twisting the rotating plunger, the liquid or fluid reagent is pushed through the outlet needle into the measured sample cavity for measurement, reducing the pollution of the water sample and ensuring a more accurate measurement result.

[0012] Further, an indication mark is provided on the rotating plunger, and a groove is provided at the bottom of the rotating plunger.

[0013] Further, scale lines are provided on the outer wall of the reagent pre - storage cavity.

[0014] By pre - calculating the pitch and the bottom area of the reagent pre - storage cavity, the relationship between the rotation of the rotating plunger by a fixed angle and the volume of the extruded reagent can be determined. Thus, scale lines are set on the outer wall of the reagent pre - storage cavity. When twisting the rotating plunger, the remaining amount of the reagent can be read according to the scale lines and the indication mark on the rotating plunger, which can also be used as an alignment mark for one full rotation. This reduces the error in reagent addition and can obtain a better measurement result. The groove at the bottom of the rotating plunger can be combined with an electric pushing motor to achieve electric pushing.

[0015] Further, a flat surface is provided on the outer wall of the measured sample cavity.

[0016] Further, the rotating plunger and the bottle cap are polygonal cylinders.

[0017] The rotating plunger and the bottle cap are polygonal cylinders, which can be twisted more conveniently. There is a flat surface on the outer wall of the measured sample cavity, which can be conveniently clamped, effectively preventing the colorimetric bottle body from rotating, resulting in the reagent not being squeezed from the reagent pre-storage cavity into the measured sample cavity for detection.

[0018] In addition to manual twisting, the rotating plunger can also be twisted by an electric pushing motor added to the colorimeter. The electric pushing motor is combined with the bottom groove of the rotating plunger. After using the electric pushing motor, the whole measurement process is further simplified. Only need to take a sample and then put it into the colorimeter. After the colorimeter automatically measures the background signal, the control pushes the motor to push in the reagent. Wait for the color development to complete and then measure the colorimetric result to obtain the concentration of the measured substance.

[0019] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The liquid outlet needle of the present utility model is a hollow needle with a closed top, and the side is provided with an opening connected to the hollow pipe. A rubber sleeve is sleeved on the liquid outlet needle. When the positive pressure is greater than the pressure wrapped by the rubber sleeve, the liquid or fluid reagent can be extruded through the side opening. Usually, the side opening is closed by the rubber sleeve to prevent the reagent from being contaminated. The liquid or fluid reagent is extruded from the reagent pre-storage cavity into the measured sample cavity through the rotating plunger. The colorimetric bottle body and the rotating plunger are threadedly connected. The relationship between the fixed rotation angle of the rotating plunger and the extrusion volume of the reagent can be determined by pre-calculating the pitch and the bottom area of the reagent pre-storage cavity. Due to the existence of the rubber sleeve, the reagent can only be extruded and cannot be sucked in. Therefore, the rotating plunger can only be rotated and pushed in one direction. If the rotating plunger is rotated and retracted in the reverse direction, a vacuum will be formed and the rotating plunger will return to its original position. There are scale lines on the outer wall of the reagent pre-storage cavity, and there are indicating marks on the outside of the rotating plunger. The remaining amount of the reagent can be read from the scale lines and the indicating marks, and it can also be used as an alignment mark for one revolution of advancement. Using a colorimetric bottle with self-contained reagent, the whole measurement process becomes three steps: taking a sample, putting it into the colorimeter, taking out and rotating a certain angle such as 360 degrees, and then putting it into the colorimeter, reducing the pollution of the water sample and also reducing the error of reagent addition, obtaining better results. In addition to manually rotating the plunger to push in the reagent, an electric pushing motor can also be added to the colorimeter. The resistance output shaft is combined with the groove at the bottom of the rotating plunger to achieve electric pushing. There is a clamping position on the outer wall of the measured sample cavity, which can prevent the colorimetric bottle body from rotating and not being able to be extruded. After using the electric pushing motor, the whole measurement process is further simplified. Only need to take a sample and then put it into the colorimeter. After the colorimeter automatically measures the background signal, the control pushes the motor to push in the reagent. Wait for the color development to complete and then measure the colorimetric result to obtain the concentration of the measured substance. Description of the Drawings

[0020] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the description. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0021] Figure 1 It is a schematic structural diagram of the main body of one side of the present utility model patent with scale lines;

[0022] Figure 2 It is a schematic diagram of the internal structure of the main body of the present utility model patent;

[0023] Figure 3 It is a schematic diagram of the cavity structure of the present utility model patent;

[0024] Figure 4 It is a top view of the colorimeter of the present utility model patent;

[0025] Figure 5 It is a schematic diagram of the electric push motor and the rotating plunger of the present utility model patent;

[0026] Figure 6 It is a schematic diagram of the internal structure when the colorimeter of the present utility model patent name is working;

[0027] In the figure: 1 - rotating plunger, 2 - liquid outlet needle, 3 - rubber sleeve, 4 - colorimetric bottle body, 41 - threaded cylinder, 5 - bottle cap. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0030] As Figure 1 , Figure 2 shown, a colorimetric bottle with a self - contained reagent, the colorimetric bottle includes a rotating plunger 1, a liquid outlet needle 2, a rubber sleeve 3, a colorimetric bottle body 4 and a bottle cap 5. The rotating plunger 1 is threadedly connected to the colorimetric bottle body 4. The top of the liquid outlet needle 2 is hollow and closed. The side of the liquid outlet needle 2 is provided with an opening communicating with a hollow pipe. The bottom end of the opening of the liquid outlet needle 2 is flush with the bottom end of the colorimetric bottle body 4. The liquid outlet needle 2 penetrates into the colorimetric bottle body 4. The liquid outlet needle 2 can introduce the reagent into the colorimetric bottle body 4. The rubber sleeve 3 is sleeved on the liquid outlet needle 2. The rubber sleeve 3 closes the opening on the side of the liquid outlet needle 2. The bottle cap 5 is threadedly connected to the colorimetric bottle body 4.

[0031] By twisting the rotary plunger 1, the reagent flows into the colorimetric bottle body 4 through the liquid outlet needle 2, and the rubber sleeve 3 is sleeved on the liquid outlet needle 2. When the positive pressure is greater than the wrapping pressure of the rubber sleeve 3, the liquid or fluid reagent can be squeezed out through the side opening of the liquid outlet needle 2. Normally, the side opening is closed by the rubber sleeve 3 to prevent the reagent from being contaminated. Due to the existence of the rubber sleeve 3, the reagent can only be squeezed out but cannot be inhaled, so the rotary plunger 1 can only be rotated and pushed in one direction. If the rotary plunger 1 is rotated backward in the opposite direction, a vacuum will be formed and the rotary plunger 1 will return to its original position.

[0032] like Figure 3 As shown, a threaded cylinder 41 is provided outwardly at the bottom of the colorimetric bottle 4, and the threaded cylinder 41, the bottom of the colorimetric bottle 4, and the top of the plunger of the rotating plunger 1 constitute a reagent pre-storage cavity. The cavity of the colorimetric bottle 4 is the sample cavity to be tested, and the reagent pre-storage cavity and the sample cavity to be tested are connected by a liquid outlet needle 2.

[0033] The liquid or fluid reagent is first stored in the reagent pre-storage chamber. When measurement is required, the liquid or fluid reagent is pushed into the sample chamber 42 through the liquid outlet needle 2 by twisting the rotating plunger 1 for measurement, thereby reducing water sample contamination and ensuring more accurate measurement results.

[0034] like Figure 1 As shown, an indicator mark is provided on the rotary plunger 1, and a groove is provided at the bottom of the rotary plunger 1.

[0035] like Figure 1 As shown, scale lines are provided on the outer wall of the reagent pre-storage chamber.

[0036] By precalculating the pitch and the bottom area of ​​the reagent pre-storage chamber, the relationship between the fixed rotation angle of the rotary plunger 1 and the reagent extrusion volume can be determined, so that a scale line is set on the outer wall of the reagent pre-storage chamber. When the rotary plunger 1 is twisted, the remaining amount of the reagent can be read according to the scale line and the indicator mark on the rotary plunger 1, which can also be used as a mark for advancing one circle, thereby reducing the error in reagent addition and obtaining better measurement results. The groove at the bottom of the rotary plunger 1 can be combined with an electric pushing motor to realize electric pushing.

[0037] like Figure 1 As shown, a plane is provided on the outer wall of the sample chamber to be tested.

[0038] like Figure 5 , Figure 6 As shown, the rotary plunger 1 and the bottle cap 5 are polygonal cylinders.

[0039] The rotating plunger 1 and the bottle cap 5 are polygonal cylinders, which can be twisted more conveniently. The outer wall of the sample cavity is provided with a flat surface, which can be conveniently clamped, effectively preventing the colorimetric bottle 4 from rotating, resulting in the reagent being unable to be squeezed from the reagent pre-storage cavity into the sample cavity for detection.

[0040] In addition to manual twisting, the rotating plunger 1 can also be twisted by an electric pushing motor added to the colorimeter. The electric pushing motor is combined with the groove at the bottom of the rotating plunger 1. After using the electric pushing motor, the entire measurement process is further simplified. It is only necessary to take a sample and then put it into the colorimeter. After the colorimeter automatically measures the background signal, the air control pushing motor pushes the reagent in. After waiting for the color development to be completed, the colorimetric result is measured to obtain the concentration of the measured substance.

[0041] The working principle of this utility model:

[0042] The liquid discharge needle is a hollow top closed needle, and the side opening is connected to the hollow pipe. A rubber sleeve is used to cover the liquid discharge needle. When the positive pressure is greater than the pressure wrapped by the rubber sleeve, the liquid or fluid reagent can be squeezed out through the side opening. Usually, the side opening is closed by the rubber sleeve to prevent the reagent from being contaminated. The liquid or fluid reagent pre-stored in the reagent pre-storage cavity is squeezed into the sample cavity to be tested by rotating the plunger. The colorimetric bottle body and the rotating plunger are threadedly connected. The relationship between the fixed rotation angle of the rotating plunger and the extruded volume of the reagent can be determined by pre-calculating the pitch and the bottom area of ​​the reagent pre-storage cavity. Due to the existence of the rubber sleeve, the reagent can only be squeezed out and cannot be inhaled, so the rotating plunger can only be rotated and pushed in one direction. If the rotating plunger is rotated in the opposite direction, a vacuum will be formed and the rotating plunger will return to its original position. There are scale lines on the outer wall of the reagent pre-storage cavity, and there are indicator marks on the outside of the rotating plunger. The remaining amount of the reagent can be read from the scale lines and the indicator marks, and it may also be used as an alignment mark for pushing one circle. When using a colorimetric bottle with its own reagent, the entire measurement process becomes a three-step process of sampling, placing it into the colorimeter, taking it out and rotating it at a certain angle such as 360 degrees, and then placing it back into the colorimeter. This reduces water sample contamination and the error in reagent addition, resulting in better results. In addition to being able to manually rotate the plunger to advance the reagent, an electric pushing motor can also be added to the colorimeter. The resistor output shaft and the groove at the bottom of the rotating plunger are combined to achieve electric pushing. A clamping position is provided on the outer wall of the sample cavity to prevent the colorimetric bottle from rotating and being unable to be squeezed out. After using the electric pushing motor, the entire measurement process is further simplified. You only need to take a sample and then place it into the colorimetric instrument. After the colorimeter automatically measures the background signal, the air control pushing motor pushes in the reagent. After waiting for the color development to be completed, the colorimetric result is measured to obtain the concentration of the substance being measured.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A colorimetric bottle with its own reagent, characterized in that: The colorimetric bottle comprises a rotating plunger (1), a liquid discharge needle (2), a rubber sleeve (3), a colorimetric bottle body (4) and a bottle cap (5); the rotating plunger (1) and the colorimetric bottle body (4) are threadedly connected; the liquid discharge needle (2) is a hollow needle with a closed top; a side opening of the liquid discharge needle (2) is connected to a hollow pipe; the open bottom end of the liquid discharge needle (2) is flush with the bottom end of the colorimetric bottle body (4); the liquid discharge needle (2) penetrates the colorimetric bottle body (4); the liquid discharge needle (2) is connected to the inside and outside of the colorimetric bottle body (4); the rubber sleeve (3) is sleeved on the liquid discharge needle (2); the rubber sleeve (3) closes the side opening of the liquid discharge needle (2); and the bottle cap (5) and the colorimetric bottle body (4) are threadedly connected.

2. A colorimetric bottle with self-contained reagent according to claim 1, characterized in that: A threaded cylinder (41) is provided outwardly at the bottom of the colorimetric bottle (4); the threaded cylinder (41), the bottom of the colorimetric bottle (4), and the top of the plunger of the rotating plunger (1) form a reagent pre-storage cavity; the cavity of the colorimetric bottle (4) is a cavity of the sample to be tested; the reagent pre-storage cavity and the cavity of the sample to be tested are connected by a liquid outlet needle (2).

3. A colorimetric bottle with self-contained reagent according to claim 2, characterized in that: The rotary plunger (1) is provided with an indication mark, and the bottom of the rotary plunger (1) is provided with a groove.

4. A colorimetric bottle with self-contained reagent according to claim 3, characterized in that: The outer wall of the reagent pre-storage cavity is provided with scale lines.

5. A colorimetric bottle with self-contained reagent according to claim 4, characterized in that: The outer wall of the sample cavity to be tested is provided with a plane.

6. A colorimetric bottle with self-contained reagent according to claim 5, characterized in that: The rotary plunger (1) and the bottle cap (5) are polygonal cylinders.

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