CN210585003U

CN210585003U - Reagent filling burette

Info

Publication number: CN210585003U
Application number: CN201921121457.2U
Authority: CN
Inventors: 申香枝; 王根超
Original assignee: Henan Foundation Egg Biotechnology Co Ltd
Current assignee: Henan Foundation Egg Biotechnology Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-22
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to an experimental device technical field especially relates to a reagent filling burette, reagent filling burette includes sharp mouth glass pipe, establishes the rubber head and wears the dress and is in stay tube on the sharp mouth glass pipe, thereby it is connected with a plurality ofly to be used for extending and supporting in corresponding household utensils border department location when filling reagent to articulate around its axis on the stay tube thereby the locating component of sharp mouth glass pipe, locating component includes two at least articulated locating levers of connecting of head and the tail, and the rotation frictional force of articulated position department is greater than between each locating lever thereby locating component's gravity makes each locating lever stable positioning sharp mouth glass pipe. The utility model discloses at the in-process of whole dropwise add, the water-clock of sharp mouth glass tube lower extreme can not take place to rock, has guaranteed the steady filling of reagent, has avoided the safety problem and the accurate problem of experiment that cause that flies of reagent, convenient to use, simple structure.

Description

Reagent filling burette

Technical Field

The utility model relates to an experimental device technical field especially relates to a reagent filling burette.

Background

In chemical and biological experiments, reagents are often required to be added into vessels such as test tubes and beakers, a dropper is a reagent adding device commonly used when the liquid taking and placing amount is not large, and the dropper can be operated to suck or add a small amount of reagents, suck supernatant liquid, separate out precipitates and the like. The dropper generally comprises a rubber head and a sharp-nose glass tube, and when the dropper is used, the glass tube is clamped by a middle finger and a ring finger, and meanwhile, the rubber head is held by a thumb and a forefinger to be vertical to the right upper part of the container, so that the dropper is prevented from inclining, standing upside down, extending into the container and touching the wall of the container.

However, in the above operation process, when an operator drops the reagent by hand, the shaking of the hand inevitably occurs, and further the shaking of the drop opening at the lower end of the dropper is caused, which affects the stable filling of the reagent, and even causes the reagent to scatter, which affects the safety of the experiment and the purity of the reagent, so that it is very necessary to provide the dropper capable of stably filling the reagent.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reagent filling burette to solve prior art and can not keep the stable problem of lower extreme drip when dropwise add reagent.

The utility model discloses a reagent filling burette adopts following technical scheme:

the utility model provides a reagent filling burette, includes sharp mouth glass tube, sets up the rubber head of sharp mouth glass tube upper end and wear the dress and be in the stay tube on the sharp mouth glass tube, thereby it is connected with a plurality ofly to be used for extending and supporting at corresponding household utensils border department when filling reagent to fix a position around its axis articulated on the stay tube sharp mouth glass tube's locating component, locating component includes two at least end to end articulated connecting's locating lever, thereby the rotation frictional force of articulated position department is greater than between each locating lever thereby makes each locating lever stable positioning sharp mouth glass tube.

The adjacent two positioning rods are respectively provided with a bulge and a groove which are used for locking the adjacent positioning rods after contraction and are matched for use.

The end part of the positioning rod corresponding to one end of the positioning assembly is hinged with the positioning pipe, and the end part of the positioning rod corresponding to the other end of the positioning assembly is provided with an elastic supporting block.

The elastic supporting block is provided with a groove corresponding to the shape of the edge of the corresponding vessel.

And an elastic rubber ring for increasing the sliding friction force of the supporting tube on the sharp-mouth glass tube is arranged on the inner wall of the supporting tube.

The supporting tube is provided with a long through hole which extends along the extending direction of the sharp-mouth glass tube and is used for observing the liquid level in the sharp-mouth glass tube.

The utility model has the advantages that: the utility model discloses wear to adorn the stay tube on sharp mouth glass tube, articulated locating component who connects can be opened by operating personnel when using on the stay tube, extend and support the border department at corresponding household utensils, thereby stabilize location sharp mouth glass tube, operating personnel only need press down gently at this moment the operation rubber head can be with the reagent dropwise add in the sharp mouth glass tube advance the household utensils china, whole dropwise add in-process, the drip of sharp mouth glass tube lower extreme can not take place to rock, the filling of reagent has been guaranteed steadily, the safety problem and the accurate problem of experiment that cause of scattering of reagent have been avoided, high durability and convenient use, and the steam generator is simple in structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a front view of an embodiment of a reagent filling dropper according to the present invention;

FIG. 2 is a schematic diagram of a specific structure corresponding to FIG. 1;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 1;

FIG. 4 is an enlarged schematic view of detail B of FIG. 2;

FIG. 5 is a partial schematic structural view of the leg assembly of the present embodiment (only one first support bar is shown);

FIG. 6 is a schematic view of the usage status of the present embodiment;

in the figure: 1. a rubber head; 11. a sharp-nose glass tube 12, a drip nozzle; 2. a positioning assembly; 21. positioning a plate; 211. a locking protrusion; 22. a second positioning rod; 221. a locking groove; 23. an elastic support block; 24. a splint; 3. a support assembly; 31. supporting a tube; 32. an elastic rubber ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses an embodiment of reagent filling burette, as shown in fig. 1 to fig. 6, a reagent filling burette, there are the sharp mouth glass tube 11 of drip nozzle 12, set up the rubber head 1 and wear the stay tube 31 of dress on sharp mouth glass tube 11 in the below, thereby articulated four locating component 2 that are used for extending and support at household utensils border department location sharp mouth glass tube 11 when filling reagent around its axis are connected with on the stay tube 31.

In this embodiment, locating component 2 includes two end-to-end hinged connection's locating levers, first locating lever and second locating lever 22 promptly, wherein first locating lever includes two locating plates 21 that set up side by side, second locating lever 22 sets up the lower extreme between two locating plates 21 and is pressed from both sides tightly by two locating plates 21, second locating lever 22 sets up and is cliied two splint 24 on two locating plates 21 upper ends are fixed on the stay tube 31, and realize articulated with the stay tube 31 through the articulated round pin of wearing dress on two splint 24, thereby the rotatory frictional force of articulated position department between second locating lever 22 and two locating plates 21 is greater than the gravity that makes each bracing piece stable positioning point mouth glass tube 11. Specifically, the two positioning plates 21 and the second positioning rod 22 are clamped and hinged through rivets, the two positioning plates 21 clamp the second positioning rod 22 to enable the friction force of the second positioning rod 22 to be enough to overcome the total weight of the first positioning rod, the sharp-mouth glass tube 11, the rubber head 1, the supporting tube 31 and the absorbed liquid, and the first positioning rod and the second positioning rod 22 can be folded and contracted together through manual rotation.

The first positioning rod and the second positioning rod 22 are respectively provided with a locking protrusion 211 and a locking groove 221 which are used for locking the two positioning rods together after being retracted and are used in a matched mode.

The end of the positioning rod corresponding to one end of the positioning component 2, namely the first positioning rod, is hinged to the supporting tube 31, the end of the positioning rod corresponding to the other end, namely the second positioning rod 22, is provided with an elastic supporting block 23, and the elastic supporting block 23 is used for increasing the contact friction force between the second positioning rod 22 and the edge of the vessel to prevent the second positioning rod 22 from sliding along the edge of the vessel.

In this embodiment, the resilient support block 23 has a recess therein for corresponding to the shape of the rim of the vessel.

In this embodiment, the inner wall of the support tube 31 is provided with an elastic rubber ring 32 for increasing the sliding friction force of the support tube 31 on the glass tube 11, when the position of the support tube 31 on the glass tube 11 needs to be adjusted, the support tube 31 is manually pushed to overcome the friction force between the elastic rubber ring 32 and the wall of the glass tube 11, and the support tube 31 is fixed under the action of the friction force after the adjustment. The support tube 31 and the elastic rubber ring 32 together constitute the support assembly 3.

In other embodiments, the positioning assemblies may be provided in three or more numbers, and the positioning rod of each positioning assembly may be provided in plurality.

In other embodiments, the support tube may be provided with a long through hole extending in the direction in which the glass tip tube extends for observing the liquid level in the glass tip tube.

In specific use, the positioning assembly 2 is firstly folded to the state shown in fig. 1, at this time, the first positioning rod and the second positioning rod 22 are locked in the contracted state by the locking protrusion 211 and the locking groove 221, then sucking the reagent, pinching the sharp-mouth glass tube 11, manually unfolding the positioning component 2 to release the locking of the locking groove 221 and the locking protrusion 211, enabling the elastic supporting block 23 at the end part of the second positioning rod 22 in the positioning component 2 to be in supporting contact with the edge of the vessel, positioning the drip nozzle 12 and the drip opening of the sharp-mouth glass tube 11, and at the moment, because the rotating friction force between the first positioning rod and the second positioning rod 22 is enough to overcome the gravity borne by the second positioning rod 22, the unfolded positioning component 2 is not bent any more, thereby stably positioning and supporting the sharp-nose glass tube 11, and at the moment, an operator only needs to press and operate the rubber head 1 to extrude the reagent into a vessel, as shown in fig. 6.

The utility model discloses at the in-process of whole dropwise add, the water-clock of 11 lower extremes of sharp mouth glass pipe can not take place to rock, has guaranteed the steady filling of reagent, has avoided the safety problem and the accurate problem of experiment that cause of scattering of reagent, convenient to use, simple structure.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reagent filling burette is characterized in that: the device comprises a sharp-mouth glass tube, a rubber head arranged at the upper end of the sharp-mouth glass tube and a supporting tube arranged on the sharp-mouth glass tube in a penetrating mode, wherein the supporting tube is hinged to the supporting tube around the axis of the supporting tube and is connected with a plurality of positioning assemblies used for extending and supporting the sharp-mouth glass tube at the edge of a corresponding vessel during reagent filling, so that the positioning assemblies are positioned, each positioning assembly comprises at least two positioning rods hinged end to end, and the rotating friction force of the hinged position between each positioning rod is greater than that of the gravity of each positioning assembly so that each positioning rod is stably positioned on the sharp-mouth glass tube.

2. A reagent filling dropper as claimed in claim 1, wherein: the adjacent two positioning rods are respectively provided with a bulge and a groove which are used for locking the adjacent positioning rods after contraction and are matched for use.

3. A reagent filling dropper as claimed in claim 1 or claim 2, wherein: the end part of the positioning rod corresponding to one end of the positioning assembly is hinged with the positioning pipe, and the end part of the positioning rod corresponding to the other end of the positioning assembly is provided with an elastic supporting block.

4. A reagent filling dropper as claimed in claim 3, wherein: the elastic supporting block is provided with a groove corresponding to the shape of the edge of the corresponding vessel.

5. A reagent filling dropper as claimed in claim 1, wherein: and an elastic rubber ring for increasing the sliding friction force of the supporting tube on the sharp-mouth glass tube is arranged on the inner wall of the supporting tube.

6. A reagent filling dropper as claimed in claim 1 or claim 5, wherein: the supporting tube is provided with a long through hole which extends along the extending direction of the sharp-mouth glass tube and is used for observing the liquid level in the sharp-mouth glass tube.