CN212819974U

CN212819974U - Rubber head dropper

Info

Publication number: CN212819974U
Application number: CN202020755600.XU
Authority: CN
Inventors: 刘亚奇; 吴清松; 姚建君
Original assignee: Hubei Hongxin Chemical Co ltd
Current assignee: Hubei Hongxin Chemical Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-03-30
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses a rubber head burette, including rubber cap and glass straw, the front end of glass straw has the conical liquid part of getting, the glass straw is being close to get liquid part branch department and still be equipped with an antiskid cover, the antiskid cover is the cover is in the outside four pyramid platform rubber sleeves of glass straw, the great one end orientation of its diameter the rubber cap, be equipped with convex anti-skidding line on the lateral wall of antiskid cover. This rubber head burette can effectually prevent through the antiskid cover that the glass straw from rolling to avoid the tip of glass straw to get the liquid part and break because of the collision, avoid the rubber head burette to damage, prolong the life of rubber head burette.

Description

Rubber head dropper

Technical Field

The utility model relates to a chemistry experiment apparatus, concretely relates to rubber head drip tube.

Background

The rubber dropper is one of the most commonly used tools in chemical laboratories for taking and placing liquids. When the rubber head dropper is used, the rubber head dropper is usually and directly placed on a laboratory table for convenience, the state is shown in figure 1, because the glass tube of the rubber head dropper is smooth, one end of the glass tube easily rolls on the laboratory table, and the tip of the rubber head dropper is thin, so that once collision occurs during rolling, the tip of the rubber head dropper is easily broken, and the rubber head dropper is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rubber head burette to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a rubber head burette, includes rubber cap and glass straw, the front end of glass straw has the toper and gets the liquid part, the glass straw is being close to get liquid part branch department and still being equipped with an antiskid cover, the antiskid cover is for the cover the outside four pyramid platform rubber sleeve of glass straw, the great one end orientation of its diameter the rubber cap, be equipped with convex anti-skidding line on the lateral wall of antiskid cover.

According to an embodiment of the utility model, to rubber head burette, the axial cross-section of antiskid cover is isosceles trapezoid, and the trapezoidal base angle of equal waist is 75.

According to the utility model discloses an embodiment, right rubber head burette, the centre of antiskid cover be equipped with the diameter with the same column hole of diameter of glass straw, the antiskid cover is in through this column borehole jack on the glass straw to can dismantle.

According to an embodiment of the utility model, for rubber head drip tube, the antiskid cover is in the convex maximum length in glass straw surface is no longer than 0.5 cm.

According to the utility model discloses an embodiment, right rubber head burette, the glass straw constitute by upper tube body, lower tube body and middle sleeve jointly, the lower extreme of upper tube body is pegged graft middle sleeve's upper end, the upper end of lower tube body is pegged graft middle sleeve's lower extreme, just the lower extreme of upper tube body with the upper end of lower tube body all is fixed with sealed rubber ring, sealed rubber ring is attached middle sleeve's inner wall to it is not fixed.

According to an embodiment of the present invention, for the rubber dropper, the length of the lower tube is greater than the sum of the length of the upper tube and the length of the middle sleeve.

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

the utility model provides a rubber head burette is equipped with anti-skidding cover at the front end of glass straw, and when the rubber head burette was put on the laboratory bench, the anti-skidding cover can effectually prevent that the glass straw from rolling to avoid the most advanced liquid part of getting of glass straw to break because of the collision, avoid the rubber head burette to damage, prolong the life of rubber head burette.

Drawings

FIG. 1 is a schematic view of a common rubber-tipped dropper in a state of being placed on a laboratory bench;

FIG. 2 is a schematic structural view of the rubber dropper of the present invention when placed on a laboratory bench;

FIG. 3 is a schematic structural view of the rubber dropper of the present invention in a non-extended state;

FIG. 4 is a schematic structural view of the rubber dropper of the present invention in an extended state;

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.

Referring to fig. 2-4, the present invention provides a technical solution: the utility model provides a rubber head burette, includes rubber cap 1 and glass straw 2, the front end of glass straw 2 has the conical liquid part 3 of getting, glass straw 2 is being close to get liquid part 3 department and still be equipped with an antiskid cover 4, antiskid cover 4 is for the cover the outside four pyramid platform rubber sleeves of glass straw 2, the great one end orientation of its diameter rubber cap 1, be equipped with convex anti-skidding line on the lateral wall of antiskid cover 4.

As shown in figure 2, when the rubber head dropper is placed on the experiment table, the anti-slip sleeve 4 and the rubber cap 1 contact the experiment table, the glass pipette 2 does not contact the experiment table, and the anti-slip characteristic of the anti-slip sleeve 4 is utilized, so that the rubber head dropper is not easy to roll compared with the state shown in figure 1, and the rubber head dropper can be prevented from being broken due to rolling impact.

Because the diameter of the rubber cap 1 of the rubber head dropper is larger than that of the glass sucker 2, when the rubber head dropper is placed on a laboratory bench, the liquid taking part 3 is necessarily inclined downwards, the anti-skid sleeve 4 is designed into a specific quadrangular frustum shape, the side surface of the anti-skid sleeve is also inclined, and when the rubber head dropper is placed on the laboratory bench in the state shown in figure 2, the side wall of the anti-skid sleeve 4 can be fully contacted with the table surface, so that a larger contact surface is ensured, and a more sufficient anti-skid effect is achieved. In addition, the anti-slip sleeve 4 can prevent the glass pipette from contacting the table top, and can prevent the liquid taking part 3 from contacting the table top to cause pollution when the rubber head dropper is continuously used (not cleaned in the period).

In another embodiment, the axial section of the anti-slip sleeve 4 is an isosceles trapezoid, and the base angle of the isosceles trapezoid is 75 °. According to the diameter ratio of the rubber cap and the glass suction tube of the common rubber head dropper, the inclination of the rubber head dropper when the rubber head dropper is placed on a laboratory bench in the state shown in figure 1 is calculated to be about 75 degrees, so that the bottom angle of the anti-skid sleeve 4 is set to be 75 degrees, and the side wall of the anti-skid sleeve 4 can be more attached to the table top.

In another embodiment, a cylindrical hole with the same diameter as that of the glass straw is arranged in the middle of the anti-slip sleeve 4, and the anti-slip sleeve 4 is sleeved on the glass straw 2 through the cylindrical hole and can be detached.

In another embodiment, the maximum length of the anti-slip sleeve 4 protruding on the surface of the glass suction pipe 2 is not more than 0.5 cm. The length of the protecting sleeve 4 protruding out of the glass straw 2 is proper, liquid can be taken without taking down the anti-skid sleeve 4 under most conditions, the rubber-tipped dropper can be taken along with the rubber-tipped dropper, the rubber-tipped dropper is very convenient, the bottle mouth of a small number of liquid storage bottles is small, and the anti-skid sleeve can be taken down and is convenient to use.

In another embodiment, the glass straw 2 is composed of an upper tube body 21, a lower tube body 22 and a middle sleeve 23, the lower end of the upper tube body 21 is inserted into the upper end of the middle sleeve 23, the upper end of the lower tube body 22 is inserted into the lower end of the middle sleeve 23, sealing rubber rings 5 are fixed to the lower end of the upper tube body 21 and the upper end of the lower tube body 22, and the sealing rubber rings 5 are attached to the inner wall of the middle sleeve 23 and are not fixed. The length of general rubber head burette is fixed, and when using, some stock solution bottles are darker, and along with the liquid level descends, the length of rubber head burette is not enough, just can't get liquid, need change longer rubber head burette, and the rubber head burette that this application provided still can adjust length, facilitates the use, as shown in fig. 3 and 4, when needs are elongated, with upper tube body 21 and lower tube body 22 respectively to the both ends of middle sleeve 23 pull, can make the length extension of rubber head burette.

In another embodiment, the length of the lower tube 22 is greater than the sum of the length of the upper tube 21 and the length of the intermediate sleeve 23.

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 rubber head burette, includes rubber cap and glass straw, its characterized in that, the front end of glass straw has the toper and gets the liquid part, the glass straw is being close to get liquid part branch department and still being equipped with an antiskid cover, the antiskid cover is for the cover the outside four pyramid platform rubber sleeves of glass straw, the great one end orientation of its diameter the rubber cap, be equipped with convex anti-skidding line on the lateral wall of antiskid cover.

2. The pipette according to claim 1, wherein the axial section of the anti-slip cap is an isosceles trapezoid having a base angle of 75 °.

3. The rubber dropper of claim 1 wherein the anti-slip sleeve has a cylindrical hole in the middle, the diameter of the cylindrical hole being the same as the diameter of the glass pipette, and the anti-slip sleeve is detachably sleeved on the glass pipette through the cylindrical hole.

4. The pipette tip of claim 1 wherein the maximum length of the anti-slip cap protruding from the surface of the glass pipette tip is no more than 0.5 cm.

5. The pipette according to claim 1, wherein the glass pipette comprises an upper tube, a lower tube and an intermediate sleeve, the lower end of the upper tube is connected to the upper end of the intermediate sleeve, the upper end of the lower tube is connected to the lower end of the intermediate sleeve, and the lower end of the upper tube and the upper end of the lower tube are fixed with a sealing rubber ring, which is attached to the inner wall of the intermediate sleeve and is not fixed.

6. The tip dropper of claim 5 wherein the length of the lower tube is greater than the sum of the length of the upper tube and the length of the intermediate sleeve.