CN218470276U - Chemical reagent sampling device - Google Patents

Abstract

The utility model relates to the technical field of chemical devices, and specifically discloses a chemical reagent sampling device, which includes a dropper. A sealing cover is installed on the upper end of the dropper, and a baffle is arranged inside the sealing cover. A spring is connected between the sealing covers, and a sealing ring is provided on the outer surface of one end of the dropper close to the sealing cover, an extrusion head is sleeved on the outside of the sealing ring, and a A positioning bracket, one end of the positioning bracket is located between the extrusion head and the sealing cover and is connected with an upper collar. The dropper extends into the inside of the test tube as a whole, and the first snap ring and the second snap ring are integrally sleeved on the outside of the test tube, which can prevent the dropper from shaking when it moves up and down and touch the inner wall of the test tube to cause pollution. The scale marks provided on the side surface of the dropper can be used for quantitative sampling by the dropper.

Description

A chemical reagent sampling device

technical field

The utility model relates to the technical field of chemical devices, in particular to a chemical reagent sampling device.

Background technique

Sampling refers to the process of extracting individuals or samples from the population, that is, the process of testing or observing the population. Chemical reagents are relative standard substances for chemical research and component analysis. Synthesis, separation, qualitative and quantitative analysis, the authorized announcement number of the Chinese patent disclosure is a chemical reagent sampling device (CN207798467U), the application puts the curved neck funnel into the funnel ring, then clamps the test tube with a test tube clamp, and puts the The funnel mouth at the lower end of the curved neck funnel is aligned with the mouth of the test tube, and then the reagent is poured into the test tube, and the reagent can flow into the test tube without splashing out. The accuracy of the experiment is increased, the speed of completing the experiment is improved, and the potential safety hazard is reduced.

However, when the experiment needs to select quantitative reagents for the experiment, when the curved neck funnel is used to guide the liquid, the liquid is easy to stick to the inner wall of the funnel, and the amount of reagent used may be too small to affect the experimental parameters.

Utility model content

Aiming at the existing problems, the utility model provides a chemical reagent sampling device, which can effectively solve the problems raised in the background technology when used in conjunction with the device.

In order to solve the above problems, the utility model adopts the following technical solutions:

A chemical reagent sampling device, comprising a dropper, a sealing cover is installed on the upper end of the dropper, a baffle is arranged inside the sealing cover, a spring is connected between the baffle and the sealing cover, the A sealing ring is provided on the outer surface of the dropper near one end of the sealing cover, an extrusion head is sleeved on the outside of the sealing ring, a positioning bracket is provided on the outside of the dropper, and one end of the positioning bracket is located on the An upper collar is connected between the extrusion head and the sealing cover.

As a further solution of the present utility model: a clamping member is provided at the end of the positioning bracket away from the upper collar, and the clamping member includes: a first snap ring and a second snap ring.

As a further solution of the utility model: the middle part of the dropper is provided with a fat belly bin, the side surface of the dropper is provided with a scale line below the fat belly bin, and the inner side wall of the sealing cover is provided with a Install teeth.

As a further solution of the present invention: the sealing cover is fixedly connected to the dropper, and the baffle is fixedly connected to the spring.

As a further solution of the present invention: the length of the inner diameter of the upper collar matches the length of the outer diameter of the dropper.

As a further solution of the present invention: an elastic rotating shaft is installed between the second snap ring and the positioning bracket.

As a further solution of the utility model: the fat belly bin is connected through the dropper.

As a further solution of the present invention: the extrusion head is engaged with the sealing ring.

Compared with the prior art, the beneficial effects of the utility model are:

1. The dropper extends into the inside of the test tube as a whole, and the first snap ring and the second snap ring are integrally sleeved on the outside of the test tube, which can prevent the dropper from shaking when it moves up and down and touch the inner wall of the test tube to cause pollution. The scale marks arranged on the side surface of the dropper below can be used for quantitative sampling by the dropper.

2. The baffle will cover the upper end of the test tube as a whole to complete the shielding and prevent the bottom of the dropper from contacting the liquid inside the test tube. At the same time, when the force toward the test tube is applied, the distance from the end of the dropper to the liquid can be adjusted to prevent dripping. Liquid will splash when used.

Description of drawings

Fig. 1 is the structural representation of a kind of chemical reagent sampling device;

Fig. 2 is an exploded view of the whole device in a chemical reagent sampling device;

Fig. 3 is a cross-sectional view of a dropper in a chemical reagent sampling device.

In the figure: 1. Dropper; 2. Fat belly bin; 3. Extrusion head; 4. Sealing cover; 5. Positioning bracket; 6. First snap ring; 7. Second snap ring; 8. Upper collar; 101, sealing ring; 401, installation thread; 402, baffle plate; 403, spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1-3, this embodiment provides a chemical reagent sampling device, including a dropper 1, a sealing cover 4 is installed on the upper end of the dropper 1, and the inner side wall of the sealing cover 4 is provided with installation teeth 401, and the sealing The cover 4 is fixedly connected with the dropper 1. By installing the dropper 1 on the sealing cover 4 as a whole, the installation thread 401 inside the sealing cover 4 can be well assembled and connected with the dropper bottle to ensure the airtightness inside the dropper bottle. , the inside of the sealing cover 4 is provided with a baffle 402, and a spring 403 is connected between the baffle 402 and the sealing cover 4, and the baffle 402 is fixedly connected to the spring 403. When the dripping treatment is performed, the baffle 402 as a whole will cover The upper end of the test tube is covered to prevent the bottom of the dropper 1 from contacting the liquid inside the test tube. At the same time, when a force is applied towards the test tube, the distance from the end of the dropper 1 to the liquid can be adjusted to prevent the liquid from splashing when dripping A sealing ring 101 is provided on the outer surface of the dropper 1 near the end of the sealing cover 4, and the extrusion head 3 is sleeved on the outer side of the sealing ring 101, and the extrusion head 3 is clamped with the sealing ring 101. The extrusion head 3 is adopted as a whole The threaded mechanism can increase the volume of liquid absorption when pressing the liquid suction. The outside of the dropper 1 is provided with a positioning bracket 5. One end of the positioning bracket 5 is located between the extrusion head 3 and the sealing cover 4 and is connected with an upper collar 8. The length of the inner diameter of the collar 8 matches the length of the outer diameter of the dropper 1 .

As shown in Figure 2-3, the positioning bracket 5 is located at the end far away from the upper collar 8 and is provided with a clamping member. The clamping member includes: a first snap ring 6, a second snap ring 7, the first snap ring 6 and the second snap ring An elastic rotating shaft is installed between the snap ring 7 and the positioning bracket 5, and the ring body composed of the first snap ring 6 and the second snap ring 7 can be sleeved on the outside of the test tube. Into the inside of the test tube, the first clasp 6 and the second clasp 7 are integrally sleeved on the outside of the test tube, which can prevent the inner wall of the test tube from being polluted when the dropper 1 moves up and down. The middle part of the dropper 1 is provided with a fat belly The bin 2, the fat belly bin 2 is connected through the dropper 1, and the side surface of the dropper 1 is provided with a scale line under the fat belly bin 2, and the scale line can be used for the dropper 1 for quantitative sampling.

The working principle of the utility model is: when dripping is required, the internal air is discharged by squeezing the extrusion head 3, the dropper 1 is inserted as a whole into the inside of the reagent container, and the reagent is released to the dropper after the extrusion head 3 is released. 1 to flow inside, and judge the amount of reagent that needs to be extracted according to the scale line, place the device as a whole above the test tube, connect the first snap ring 6 and the second snap ring 7 to the outside of the test tube, and then place the dropper 1 as a whole Stretching downwards, under the limiting action of the first snap ring 6 and the second snap ring 7, it can avoid the dropper 1 from swinging greatly to cause contact with the inner side wall of the test tube, and the extrusion head 3 passes through the sealing ring 101 and the test tube as a whole. The dropper 1 is clamped, so it is used to disassemble the positioning bracket 5 and the dropper 1. When the dripping process is performed, the baffle 402 will cover the upper end of the test tube as a whole to complete the shielding and prevent the bottom of the dropper 1 from collapsing. When contacting the liquid inside the test tube, the distance from the end of the dropper 1 to the liquid can be adjusted when a force towards the test tube is applied, so as to prevent the liquid from splashing when dripping.

It should be noted that in this article, 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 that there is a relationship between these entities or operations. any such actual relationship or order between, and the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or which are inherent in the process, method, article, or apparatus.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a chemical reagent sampling device, includes burette (1), its characterized in that, sealed lid (4) are installed to the upper end of burette (1), the inside of sealed lid (4) is provided with baffle (402), baffle (402) with be connected with spring (403) between sealed lid (4), burette (1) is located and is close to the one end surface of sealed lid (4) is provided with sealing ring (101), extrusion head (3) have been cup jointed in the outside of sealing ring (101), the outside of burette (1) is provided with locating support (5), the one end of locating support (5) is located extrusion head (3) and be connected with lantern ring (8) between sealed lid (4).

2. A chemical reagent sampling device according to claim 1, wherein the end of the positioning bracket (5) remote from the upper collar (8) is provided with a gripping member comprising: a first snap ring (6) and a second snap ring (7).

3. The chemical reagent sampling device of claim 1, wherein the middle part of the dropper (1) is provided with a fat belly bin (2), the side surface of the dropper (1) below the fat belly bin (2) is provided with scale lines, and the inner side wall of the sealing cover (4) is provided with installation teeth (401).

4. A chemical reagent sampling device according to claim 1, wherein the sealing cap (4) is fixedly connected to the dropper (1), and the baffle (402) is fixedly connected to the spring (403).

5. A chemical reagent sampling device according to claim 1, wherein the length of the inner diameter dimension of the upper collar (8) is adapted to the length of the outer diameter dimension of the dropper (1).

6. A chemical reagent sampling device according to claim 2, wherein an elastic rotating shaft is arranged between the second snap ring (7) and the positioning bracket (5) and between the second snap ring (7) and the positioning bracket (5).

7. A chemical reagent sampling device according to claim 3, characterized in that the fat belly bin (2) is in through connection with the dropper (1).

8. A chemical reagent sampling device according to claim 1, wherein the squeeze head (3) is snap-fitted to the sealing ring (101).

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