CN215996239U

CN215996239U - Dropper for high school student's chemistry experiments

Info

Publication number: CN215996239U
Application number: CN202122732949.9U
Authority: CN
Inventors: 刘孟秋
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-03-11
Anticipated expiration: 2031-11-09

Abstract

The utility model relates to a teaching experiment instrument technical field just discloses a burette for high school's student's chemistry experiments, and reinforcing mechanism includes a lantern ring scale interval and No. two lantern rings, and one side lateral wall that a lantern ring scale interval and No. two lantern rings are close to mutually all is fixed with reinforcing magnet, and a lantern ring scale interval and No. two lantern rings are close to the outer wall of one end respectively with the both ends fixed connection who links up the cushion mutually, beneficial effect: the original suction pipe and the extension suction pipe and the original suction nozzle are connected through the reinforcing mechanism respectively, the length between the original suction pipe and the original suction nozzle is prolonged through the quantity of the increased extension suction pipes, the device can be adapted to containers of different depths for use, the numerical value of the first lantern ring scale interval on the original suction pipe and the extension suction pipe is the same, the numerical value of the first lantern ring scale interval on the extension suction pipe and the initial suction pipe and the numerical value of the first lantern ring scale interval on the initial suction pipe and the initial suction nozzle are added according to the increased certain quantity, and the quantity of reagent sucked by the device can be increased.

Description

Dropper for high school student's chemistry experiments

Technical Field

The utility model relates to a teaching experiment instrument technical field specifically is a burette for high school student's chemistry experiments.

Background

A dropper is required in a chemical experiment of senior high schools and mainly comprises an air suction air bag and a suction nozzle pipe, wherein the air bag discharges internal gas through the suction nozzle pipe, so that negative pressure is formed inside the air bag and the suction nozzle pipe, a reagent in a container is sucked into the pipe body through the suction nozzle pipe, the sucked capsule body expands and recovers, and the reagent in the pipe body is dripped into another container through pressing the air bag again.

However, the length of the nozzle tube in the conventional dropper is not changed, when the container to be extracted is deep, a dropper with a longer nozzle tube needs to be prepared, a large number of different reagents need to be extracted in a chemical experiment, so that droppers with different sizes need to be prepared, the preparation work is complicated, the required component proportion of different reagents in the experiment is different, the stock in the nozzle tube is limited, more reagents cannot be absorbed, the use is inconvenient, and the dropper for the high-school chemistry experiment is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To the deficiency of the prior art, the utility model provides a dropper for high school student's chemistry experiments to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a burette for high school student's chemistry experiments comprises a reinforcing mechanism, an initial sucker, an extension sucker and an initial suction nozzle, wherein the number of the reinforcing mechanism is two, the reinforcing mechanism comprises a first lantern ring scale interval and a second lantern ring, a reinforcing magnet is fixed on the side wall, close to the first lantern ring scale interval and the second lantern ring, of one side, the outer wall, close to one end of the first lantern ring scale interval and the second lantern ring, of the second lantern ring scale interval and the two ends, far away from one side of the first lantern ring scale interval and the second lantern ring, of the first lantern ring scale interval and the two lantern ring sides, of the extension sucker are located between the initial sucker and the initial suction nozzle, one side, far away from the extension sucker, of the initial sucker is connected and communicated with a suction bag, the outer walls of the initial sucker, the extension sucker and the initial suction nozzle are provided with a first lantern ring scale interval, the numerical values of the first lantern ring scale intervals on the initial sucker and the extension sucker are the same, and two ends of the extension suction pipe are detachably connected with the initial suction pipe and the initial suction nozzle through a reinforcing mechanism respectively.

Preferably, the outer wall that initial straw and extension straw and initial suction nozzle are close to one end mutually all is fixed with the fixed plate, fixed slot has all been dug at the both ends that the fixed plate is close to reinforcing mechanism one side, a lantern ring scale interval and No. two lantern rings are respectively through fixture block and fixture slot joint.

Preferably, the inner wall that initial straw and extension straw and initial suction nozzle are close to one end mutually all inlays and establishes and is fixed with rubber seal, just rubber seal's internal diameter size equals the internal diameter size of initial straw, extension straw and initial suction nozzle respectively, just rubber seal's at extension straw both ends lateral wall contacts with the lateral wall of the rubber seal of initial straw and initial suction nozzle one end respectively.

Preferably, the two ends of the side wall of one side, close to the extension suction pipe, of the initial suction pipe and the initial suction nozzle are provided with limiting slots, the two ends of the two sides of the extension suction pipe are respectively fixed with limiting insertion blocks, and the limiting insertion blocks are respectively in alternate connection with the limiting slots matched with the sizes.

Preferably, the scale value of the first lantern ring and the scale value of the second lantern ring are magnetically connected through a reinforcing magnet.

(III) advantageous effects

Compared with the prior art, the utility model provides a burette for high school student's chemistry experiments possesses following beneficial effect:

1. the initial suction pipe and the extended suction pipe as well as the extended suction pipe and the initial suction nozzle are respectively connected through a reinforcing mechanism, the length between the initial suction pipe and the initial suction nozzle is prolonged by increasing the number of the extension suction pipes, so that the device can be suitable for containers with different depths, the fixed clamping block on the scale value of the first lantern ring is clamped with the fixed clamping groove on the outer side of the initial suction pipe and the initial suction nozzle, the fixed clamping block on the second lantern ring is clamped with the fixed clamping groove on the two ends of the extension suction pipe, the rubber sealing rings on the two ends of the extension suction pipe are respectively in contact with the rubber sealing rings on the initial suction pipe and one end of the initial suction nozzle, the limiting insertion blocks on the two ends of the extension suction pipe are inserted into the rubber sealing rings on one ends of the initial suction pipe and the initial suction nozzle, the scale value of the first lantern ring and the magnetic attraction of the reinforcing magnet on the second lantern ring, and the stability of the joint of the extension suction pipe and the initial suction nozzle and the sealing performance of the splicing part are improved.

2. The numerical value of a lantern ring scale interval on initial straw and the extension straw is the same, adds according to the numerical value of a lantern ring scale interval on the certain quantity extension straw that increases and initial straw and the last lantern ring scale interval of initial suction nozzle, can make the volume that this device inhaled reagent increase, and the user can carry out the extraction of adaptation according to the weight that different reagents correspond, convenient operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the sectional structure of the initial suction pipe and the extended suction pipe of the present invention;

fig. 3 is a schematic view of the sectional structure of the reinforcing mechanism of the present invention.

In the figure: 1. a reinforcement mechanism; 11. a first lantern ring; 12. a second lantern ring; 13. connecting the soft cushion; 14. fixing the fixture block; 15. reinforcing the magnet; 2. an initial straw; 3. extending the straw; 4. an initial suction nozzle; 5. limiting slots; 6. limiting the inserting block; 7. a rubber seal ring; 8. a fixing plate; 9. fixing the clamping groove; 10. an inspiratory sac; 11. and (4) a scale value.

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 provides a technical scheme, a burette for high school student's chemistry experiments, as shown in figure 1 and figure 2, including reinforcing mechanism 1, initial straw 2, extension straw 3 and initial suction nozzle 4, the number of reinforcing mechanism 1 is two, reinforcing mechanism 1 includes a lantern ring scale interval 11 and No. two lantern rings 12, a side wall that a lantern ring scale interval 11 and No. two lantern rings 12 are close to is all fixed with reinforcing magnet 15, the outer wall that a lantern ring scale interval 11 and No. two lantern rings 12 are close to one end is respectively with linking up both ends of cushion 13 fixed connection, both ends that a lantern ring scale interval 11 and No. two lantern rings 12 are far away from each other are all fixed with fixed fixture block 14, extension straw 3 is located between initial straw 2 and initial suction nozzle 4, one side that initial straw 2 is far away from extension straw 3 is connected and communicated with suction bag 10, the outer walls of initial straw 2, extension straw 3 and initial suction nozzle 4 are all provided with a lantern ring scale interval 11, the numerical values of the scale values 11 of the first lantern ring on the initial suction pipe 2 and the extension suction pipe 3 are the same, and two ends of the extension suction pipe 3 are detachably connected with the initial suction pipe 2 and the initial suction nozzle 4 through the reinforcing mechanism 1 respectively.

As shown in fig. 3, the fixing plates 8 are fixed on the outer walls of the initial suction pipes 2 and the extension suction pipes 3 and the outer walls of the extension suction pipes 3 and the initial suction nozzles 4 close to one end, the fixing clamping grooves 9 are drilled at the two ends of one side of the fixing plate 8 close to the reinforcing mechanism 1, and the first lantern ring scale value 11 and the second lantern ring 12 are respectively clamped with the fixing clamping grooves 9 through the fixing clamping blocks 14, so that the stability of the joints of the extension suction pipes 3 and the

initial suction nozzles

2 and 4 is increased.

The inner walls of the initial suction pipe 2, the extension suction pipe 3 and the initial suction nozzle 4 close to one end are embedded with rubber sealing rings 7, the inner diameter sizes of the rubber sealing rings 7 are respectively equal to those of the initial suction pipe 2, the extension suction pipe 3 and the initial suction nozzle 4, the side walls of the rubber sealing rings 7 at two ends of the extension suction pipe 3 are respectively in contact with the side walls of the rubber sealing rings 7 at one ends of the initial suction pipe 2 and the initial suction nozzle 4, and the sealing performance of the splicing part of the extension suction pipe 3 and the initial suction pipe 2 and the initial suction nozzle 4 is improved.

Limiting slots 5 are formed in the two ends, close to the side wall of one side of the extension suction pipe 3, of the initial suction pipe 2 and the initial suction nozzle 4, limiting insertion blocks 6 are fixed at the two ends of the two sides of the extension suction pipe 3, the limiting insertion blocks 6 are respectively in alternate connection with the limiting slots 5 matched with the size, and the verticality of the connection position of the extension suction pipe 3 and the initial suction pipe 2 and the initial suction nozzle 4 is guaranteed.

The first lantern ring scale value 11 and the second lantern ring 12 are magnetically connected through the reinforcing magnet 15, and the stability of the connection position of the extension straw 3, the initial straw 2 and the initial suction nozzle 4 is improved.

The working principle of the device is as follows: if the storage between the initial suction pipe 2 and the initial suction nozzle 4 does not need to be increased, one end, close to the initial suction pipe 2 and the initial suction nozzle 4, of the initial suction pipe 2 is directly connected through the reinforcing mechanism 1, if the storage between the initial suction pipe 2 and the initial suction nozzle 4 needs to be increased, the number of the extension suction pipes 3 and the number of the reinforcing mechanisms 1 need to be increased, the extension suction pipes 3 are placed between the initial suction pipe 2 and the initial suction nozzle 4, the two first lantern ring scale values 11 are respectively sleeved on the outer walls of the initial suction pipe 2 and the initial suction nozzle 4, the second lantern ring 12 is sleeved on the outer walls of two ends of the extension suction pipes 3, the first lantern ring scale values 11 and the second lantern ring 12 move towards one ends close to each other, the first lantern ring scale values 11 are respectively clamped with the fixing clamping grooves 9 on the fixing plates 8 on the outer walls of the initial suction pipe 2 and the initial suction nozzle 4 through the fixing clamping blocks 14, and the second lantern ring 12 is respectively clamped with the fixing clamping grooves 9 on the fixing plates 8 on two sides of the extension suction pipe 3 through the fixing blocks 14, The limit inserts 6 at two sides of the extension straw 3 are respectively inserted into the limit slots 5 of the initial straw 2 and the initial suction nozzle 4, and one side of the adjacent first lantern ring scale value 11 and second lantern ring 12 is magnetically connected through the reinforced magnet 15, so that the extension straw 3 is respectively kept stable after being connected with the initial straw 2 and the initial suction nozzle 4, and through the contact of the rubber seal ring 7, the reagent enters the extension straw 3 through the initial suction nozzle 4 and enters the initial straw 2 through the extension straw 3, the sealing performance is ensured, the numerical values of the first lantern ring scale value 11 on the initial straw 2 and the extension straw 3 are the same, through the addition of the numerical values of the initial straw 2, a certain number of extension straws 3 and the first lantern ring scale value 11 on the initial suction nozzle 4, the adsorption quantity value of the whole straw is obtained, and a user can carry out adaptive extraction according to the corresponding quantities of different reagents, the operation is convenient.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a burette for high school's biochemical experiments which characterized in that: the novel suction pipe comprises a reinforcing mechanism (1), an initial suction pipe (2), an extension suction pipe (3) and an initial suction nozzle (4), wherein the number of the reinforcing mechanism (1) is two, the reinforcing mechanism (1) comprises a first lantern ring scale value (11) and a second lantern ring (12), a reinforcing magnet (15) is fixed on the side wall of one side, close to the first lantern ring scale value (11) and the second lantern ring (12), of the side wall, the outer wall, close to one end, of the first lantern ring scale value (11) and the second lantern ring (12) is respectively fixedly connected with the two ends of a linking cushion (13), fixed fixture blocks (14) are fixed at the two ends, far away from one side, of the first lantern ring scale value (11) and the second lantern ring (12), the extension suction pipe (3) is located between the initial suction pipe (2) and the initial suction nozzle (4), one side, far away from the extension suction pipe (3), of the initial suction pipe (2) is connected and communicated with a suction bag (10), the outer wall of the initial suction pipe (2), the extension suction pipe (3) and the initial suction nozzle (4) is provided with a lantern ring scale value (11), the numerical values of the lantern ring scale value (11) on the initial suction pipe (2) and the extension suction pipe (3) are the same, and the two ends of the extension suction pipe (3) are detachably connected with the initial suction pipe (2) and the initial suction nozzle (4) through a reinforcing mechanism (1) respectively.

2. The dropper for high school biochemistry experiments as claimed in claim 1, wherein: initial straw (2) and extension straw (3) and initial suction nozzle (4) are close to the outer wall of one end mutually and all are fixed with fixed plate (8), fixed plate (8) are close to reinforcing mechanism (1) one side both ends and have all been dug fixed slot (9), No. one lantern ring scale interval (11) and No. two lantern rings (12) are respectively through fixed fixture block (14) and fixed slot (9) joint.

3. The dropper for high school biochemistry experiments as claimed in claim 1, wherein: initial straw (2) and extension straw (3) and initial suction nozzle (4) are close to the inner wall of one end mutually and all inlay and establish and be fixed with rubber seal (7), just the internal diameter size of rubber seal (7) equals the internal diameter size of initial straw (2), extension straw (3) and initial suction nozzle (4) respectively, just the lateral wall of the rubber seal (7) at extension straw (3) both ends contacts with the lateral wall of the rubber seal (7) of initial straw (2) and initial suction nozzle (4) one end respectively.

4. The dropper for high school biochemistry experiments as claimed in claim 1, wherein: the two ends of the initial suction pipe (2) and the initial suction nozzle (4) close to the side wall of one side of the extension suction pipe (3) are provided with limiting slots (5), the two ends of the two sides of the extension suction pipe (3) are respectively fixed with limiting insertion blocks (6), and the limiting insertion blocks (6) are respectively connected with the limiting slots (5) matched with the size in an inserting mode.

5. The dropper for high school biochemistry experiments as claimed in claim 1, wherein: the first lantern ring scale value (11) and the second lantern ring (12) are magnetically connected through a reinforcing magnet (15).