CN214131710U

CN214131710U - Quota dropper based on double one-way air paths

Info

Publication number: CN214131710U
Application number: CN202023071198.2U
Authority: CN
Inventors: 秦玲; 程彬彬; 王贵; 姚春革
Original assignee: Institute of Information Technology of GUET
Current assignee: Institute of Information Technology of GUET
Priority date: 2020-12-19
Filing date: 2020-12-19
Publication date: 2021-09-07
Anticipated expiration: 2030-12-19

Abstract

The utility model relates to an experimental apparatus particularly, relates to a simple structure, can both drip the quota liquid at every turn, and quota burette based on two one-way gas circuits comprises following part: a thin nozzle tube body; a dropper rubber head is arranged at the tail part of the thin nozzle pipe body; the tail part of the thin nozzle pipe body extends out of a section of rated pipe from the side surface; a rated rubber head is arranged at the tail end of the rated pipe; the end of the rated pipe close to the thin nozzle pipe body is provided with a discharge one-way valve which can discharge gas into the thin nozzle pipe body; the quota pipe is close to the end of the quota rubber head and is provided with a suction one-way valve which can suck air into the quota pipe.

Description

Quota dropper based on double one-way air paths

Technical Field

The utility model relates to an experimental apparatus particularly, relates to a simple structure, can both drip the quota liquid at every turn, quota burette based on two one-way gas circuits.

Background

Dropper is a common experimental tool. Often, a fixed amount of liquid is added to the experiment. In addition to drop counting, the experimenter may also rate on a scale. At present, rated droppers exist, which are mainly realized by controlling the whole internal volume of the dropper or the internal volume of a dropper rubber head. If it is desired to add a fixed amount of liquid to multiple targets, multiple repetitions are required, or multiple carefully squeezes out after multiple aspirations of liquid with a dropper.

Therefore, at present, no rated burette with simple structure and low cost exists, and the liquid can be conveniently extruded in a rated way for a plurality of times after being sucked once.

Disclosure of Invention

The utility model aims at:

the utility model aims at the existing technical problem, provide a simple structure, with low costs, can once inhale liquid many times conveniently quota extrude quota burette.

The utility model adopts the scheme that:

the quota dropper based on the double one-way air channels comprises the following parts:

a thin nozzle tube body; a dropper rubber head is arranged at the tail part of the thin nozzle pipe body; the tail part of the thin nozzle pipe body extends out of a section of rated pipe from the side surface; a rated rubber head is arranged at the tail end of the rated pipe; the end of the rated pipe close to the thin nozzle pipe body is provided with a discharge one-way valve which can discharge gas into the thin nozzle pipe body; the quota pipe is close to the end of the quota rubber head and is provided with a suction one-way valve which can suck air into the quota pipe.

When in use, the dropper rubber head is firstly pressed down, then the thin nozzle of the thin nozzle tube body is stretched into liquid to be sucked, and then the dropper rubber head is released to suck a large amount of liquid. Then, the rated rubber head is pressed to be flat, air in the rated rubber head enters the fine nozzle dropper through the discharge one-way valve, and quantitative liquid is extruded out. Then the rated rubber head is loosened, and rated air is sucked from the outside through the suction one-way valve. Then the thin nozzle tube body is aligned to the next target, and the filling action is repeated according to the flat rated rubber head. Thus, the liquid can be conveniently added into different targets for multiple times after a large amount of liquid is conveniently sucked at one time.

The utility model has the advantages that:

1, can realize once inhaling, conveniently many times ration filling, it is very convenient. 2, the structure is simple, and the cost is low.

The utility model discloses an industry is probably:

the utility model provides a quota burette which can conveniently extrude in a quota mode for a plurality of times after liquid is sucked for one time by workers in front of an office table, and the quota burette has simple structure, low cost, easy use and production. Therefore, the utility model has the possibility of industrial production.

Drawings

Fig. 1 is a cross-sectional view of the symmetry plane of the present invention.

In the figure: 1, a thin nozzle pipe body; 2, dropping a rubber head; 3, a rated pipe; 31, a discharge check valve; 32, a suction check valve; and 4, rating the rubber head.

Detailed Description

The following are embodiments of the present invention, and the aspects of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.

a thin nozzle tube body 1; a burette rubber head 2 is arranged at the tail part of the thin nozzle tube body 1; the tail part of the thin nozzle pipe body 1 extends out of a section of rating pipe 3 from the side surface; the tail end of the rating pipe 3 is provided with a rating rubber head 4; the end of the rated pipe 3 close to the thin nozzle pipe body 1 is provided with a discharge one-way valve 31 which can discharge gas into the thin nozzle pipe body 1; the end of the rating pipe 3 close to the rating glue head 4 is provided with a suction one-way valve 32 which can suck air into the rating pipe 3.

When in use, the dropper rubber head 2 is firstly pressed down, then the thin nozzle of the thin nozzle tube body 1 is stretched into liquid to be sucked, and then the dropper rubber head 2 is released to suck a large amount of liquid. Then, the rated glue head 4 is pressed to be flat aiming at the position to be filled, air in the rated glue head 4 enters the thin nozzle dropper 1 through the discharge one-way valve 31, and quantitative liquid is extruded. The metering tap 4 is then released and a metered amount of air is sucked in from the outside through the suction check valve 32. Then the thin nozzle tube body 1 is aligned to the next target, and the filling action is repeated according to the flat rated glue head 4. Thus, the liquid can be conveniently added into different targets for multiple times after a large amount of liquid is conveniently sucked at one time.

In the above description, the present invention has been described with reference to specific embodiments, but those skilled in the art will understand that various modifications and changes can be made within the spirit and scope of the present invention without departing from the scope of the claims.

Claims

1. A quota dropper based on double one-way air paths is characterized by comprising the following parts: a thin nozzle tube body (1); the tail part of the thin nozzle pipe body (1) is provided with a burette rubber head (2); the tail part of the thin nozzle pipe body (1) extends out of a section of rating pipe (3) from the side surface; the tail end of the rating pipe (3) is provided with a rating rubber head (4); the end of the rated pipe (3) close to the thin nozzle pipe body (1) is provided with a discharge one-way valve (31) which can discharge gas into the thin nozzle pipe body (1); the end of the rating pipe (3) close to the rating rubber head (4) is provided with a suction one-way valve (32) which can suck air into the rating pipe (3).