CN214020877U

CN214020877U - Quantitative rubber head dropper

Info

Publication number: CN214020877U
Application number: CN202020860078.1U
Authority: CN
Inventors: 许常河
Original assignee: Anhui Haotian Biotechnology Co ltd
Current assignee: Anhui Haotian Biotechnology Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-08-24
Anticipated expiration: 2030-05-21

Abstract

The utility model discloses a can quantitative formula rubber head drip tube relates to laboratory instrument technical field. The utility model comprises a lower pipe body, a middle pipe body, an upper pipe body and a first rubber cap; the lower pipe body is movably connected with the middle pipe body; the middle tube body and the upper tube body are of an integrated structure; a liquid storage cavity is arranged at the middle position of the middle tube body; the inner side surface of the middle pipe body is provided with a liquid blocking block; the peripheral side surface of the upper pipe body is provided with a first side glass pipe; a piston mechanism is arranged in the first side glass tube. The utility model discloses a set up sleeve pipe, piston mechanism, the second of taking the range scale mark and glue cap, stock solution chamber, fender liquid piece, solved current can not accurate quantitative take out liquid, glue the too big extrusion of cap inconvenient and the easy suck-back problem of solution in the use for can accurate quantitative absorption liquid, improved the practicality and the durability of gluey head burette.

Description

Quantitative rubber head dropper

Technical Field

The utility model belongs to the technical field of laboratory instrument, especially, relate to a can quantitative formula rubber head drip tube.

Background

The rubber head dropper is an essential instrument in the experimental process, and the rubber head dropper is often used for sucking liquid reagent medicines in the experimental process in a laboratory. The rubber dropper is generally composed of a rubber cap and glass, wherein the glass tube is used for temporarily storing liquid, and the rubber cap is used for squeezing to generate vacuum and suck the liquid.

However, the existing rubber head dropper has the following disadvantages in the using process:

1. the existing rubber head dropper realizes the suction and extrusion of liquid by extruding a rubber cap, so that the using amount of the liquid is difficult to control, the liquid cannot be taken out accurately and quantitatively, the accuracy of an experiment is influenced, the waste of a solution reagent is easily caused, and the use is very inconvenient.

2. In the experimental process, often need drop by drop to drop in the container to constantly stir with the glass stick, nevertheless because the rubber cap is too big, the dynamics is difficult to hold when the extrusion, has once only squeezed a few drops of solution very easily, causes the inaccuracy of experimental data, even fails.

3. When the force for extruding the rubber cap is too large, the solution is sucked back into the rubber cap, so that the pollution and corrosion of the rubber cap are caused, and the service life of the rubber head dropper is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can quantitative rubber head drip tube, through sleeve pipe, piston mechanism, the second rubber cap, stock solution chamber, the fender liquid piece that sets up the band length scale mark, solved current can not accurate quantitative take out liquid, rubber cap too big extrusion inconvenient and the easy suck-back problem of solution in the use.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a quantifiable rubber head dropper, which comprises a lower tube body, a middle tube body, an upper tube body and a first rubber cap; the lower pipe body is movably connected with the middle pipe body; the middle pipe body and the upper pipe body are of an integral structure; the upper pipe body is movably connected with the first rubber cap in a thread matching mode; the lower pipe body is formed by movably connecting two sleeves; the outer side surface of the sleeve is provided with a measuring range scale mark; the lower end of the sleeve is provided with a suction head; a liquid storage cavity is arranged in the middle of the middle pipe body; the inner side surface of the middle pipe body is provided with a liquid blocking block; the liquid blocking block comprises a cross-shaped bulge, a cylinder and a top seat; the cross-shaped bulge is fixedly arranged on the lower surface of the cylinder; the upper surface of the cylinder is fixedly connected with the lower surface of the top seat; the diameter of the bottom surface of the cylinder is smaller than that of the top seat; through holes are uniformly formed in the edge of the top seat; a first side glass tube is arranged on the peripheral side surface of the upper tube body; a piston mechanism is arranged in the first side glass tube; a second side glass tube is arranged on the opposite side surface of the first side glass tube; the second side glass tube is higher than the first side glass tube; and a second rubber cap is arranged at the end part of the second side glass tube.

Further, the lower pipe body is connected with the middle pipe body in a threaded fit or sleeved mode.

Furthermore, the liquid storage cavity, the liquid blocking block and the middle tube body are of an integrated structure; the middle pipe body and the upper pipe body are made of glass.

Further, the diameter of the lower end of the sleeve is smaller than that of the upper end of the sleeve; the sleeves are connected in a sleeving manner.

Further, the piston mechanism comprises a rubber piston and a push-pull handle; the rubber piston is connected with the push-pull handle in a gluing or clamping manner.

Further, the second rubber cap is connected with the second side glass tube in a gluing or sleeving mode; the size of the second rubber cap is smaller than that of the first rubber cap.

The utility model discloses following beneficial effect has:

1. the utility model discloses to the problem that current rubber head burette can not accurate quantitative take out liquid, set up sleeve pipe, the piston mechanism of taking the measuring range scale mark for can be accurate quantitative absorption liquid, improved the accuracy of experiment, reduced the waste of solution reagent simultaneously.

2. The utility model discloses the rubber cap to current rubber head drip tube is too big, and extrusion power is not well controlled, extrudes too much solution easily, leads to the problem of experiment failure, has set up the second rubber cap, and it is more convenient to make the extrusion, and extrusion power holds more easily, has improved the practicality of rubber head drip tube.

3. The utility model discloses to current rubber head drip tube in the use, solution suck-back easily to rubber cap in, cause the pollution and the problem of corruption of rubber cap, set up stock solution chamber, fender liquid piece, avoided solution suck-back to rubber cap in, improved the life of rubber head drip tube.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

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

Fig. 1 is an exploded view of a quantifiable dropper according to the present invention;

fig. 2 is a schematic structural view of a quantifiable rubber dropper of the present invention;

fig. 3 is a schematic structural view of the liquid blocking block of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-lower tube body, 2-middle tube body, 3-upper tube body, 4-first rubber cap, 5-piston mechanism, 6-second rubber cap, 7-liquid blocking block, 101-suction head, 102-range scale mark, 201-liquid storage cavity, 301-first side glass tube, 302-second side glass tube, 501-rubber piston, 502-push-pull handle, 701-cross type bulge, 702-cylinder, 703-footstock and 704-through hole.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "lateral side", "lower end", "medial side", "lower surface", "upper surface", "peripheral side", and the like, indicate positional or positional relationships for convenience of description, and to simplify the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention relates to a quantitative rubber dropper, which comprises a lower tube 1, a middle tube 2, an upper tube 3 and a first rubber cap 4, wherein the lower tube 1 is movably connected with the middle tube 2; the lower pipe body 1 is connected with the middle pipe body 2 in a threaded fit or sleeving manner; the middle tube body 2 and the upper tube body 3 are of an integral structure; the upper pipe body 3 is movably connected with the first rubber cap 4 in a thread matching mode; the lower tube body 1 is formed by movably connecting two sleeves; the outer side surface of the sleeve is provided with a measuring range scale mark 102; the lower end of the sleeve is provided with a suction head 101; the diameter of the lower end of the sleeve is smaller than that of the upper end; the sleeves are connected in a sleeving manner; a liquid storage cavity 201 is arranged at the middle position of the middle tube body 2; the inner side surface of the middle pipe body 2 is provided with a liquid blocking block 7; the liquid storage cavity 201, the liquid blocking block 7 and the middle tube body 2 are of an integral structure; the middle tube body 2 and the upper tube body 3 are made of glass; the liquid blocking block 7 comprises a cross-shaped protrusion 701, a cylinder 702 and a top seat 703; the cross-shaped protrusion 701 is fixedly arranged on the lower surface of the cylinder 702; the upper surface of the cylinder 702 is fixedly connected with the lower surface of the top seat 703; the diameter of the bottom surface of the cylinder 702 is smaller than the diameter of the top seat 703; through holes 704 are uniformly formed at the edge of the top seat 703; a first side glass tube 301 is arranged on the peripheral side surface of the upper tube body 3; a piston mechanism 5 is arranged in the first side glass tube 301; the piston mechanism 5 comprises a rubber piston 501 and a push-pull handle 502; the rubber piston 501 is connected with the push-pull handle 502 in a gluing or clamping way; a second side glass tube 302 is arranged on the opposite side surface of the first side glass tube 301; the second side glass tube 302 is higher than the first side glass tube 301; the end part of the second side glass tube 302 is provided with a second rubber cap 6; the second rubber cap 6 is connected with the second side glass tube 302 in a gluing or sleeving manner, and the size of the second rubber cap 6 is smaller than that of the first rubber cap 4.

One specific application of this embodiment is:

sleeving the two sleeves together, sleeving the sleeve on the middle pipe body 2, and matching the first rubber cap 4 with the upper end of the upper pipe body 3 through threads; when in use, the suction head 101 is firstly inserted into the solution, and the push-pull handle 502 is pulled outwards; the solution is sucked into the rubber head dropper, the eyes watch the range scale 102 in the sleeve at any time, and when the solution reaches the required amount of the solution, the push-pull handle 502 stops pulling outwards; due to the arrangement of the piston mechanism 5 and the measuring range scale lines 102, the rubber-tipped dropper can accurately measure the required solution amount, the accuracy of the experiment is improved, and the waste of the solution is avoided;

when need add the solvent in the reaction vessel dropwise, press second rubber cap 6, because second rubber cap 6 is much littleer than first rubber cap 4 size, press more easily, can not take place to press the dynamics too big, once only extrude the condition of dripping liquid, improved the convenient to use nature of rubber head drip tube, the practicality.

When the speed of pulling the push-pull handle 502 outwards is too high, or the force of squeezing the first rubber cap 4 is too high, the liquid is sucked backwards, firstly the liquid reaches the liquid storage cavity 201, and when the liquid is less, the liquid storage cavity 201 can completely contain the liquid and cannot be sucked backwards into the first rubber cap 4; when the amount of the liquid is too large, the liquid storage cavity 201 cannot be completely contained, the liquid continues to move upwards and meets the liquid blocking block 7, and the cross-shaped protrusion 701 and the cylinder 702 of the liquid blocking block 7 can block the residual liquid, so that the solution is prevented from being sucked back to the first rubber cap 4, and the durability of the rubber head dropper is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A quantifiable rubber head dropper, which comprises a lower tube body (1), a middle tube body (2), an upper tube body (3) and a first rubber cap (4),

the method is characterized in that:

the lower pipe body (1) is movably connected with the middle pipe body (2); the middle pipe body (2) and the upper pipe body (3) are of an integral structure; the upper pipe body (3) is movably connected with the first rubber cap (4) in a thread matching manner; the lower pipe body (1) is formed by movably connecting two sleeves; the outer side surface of the sleeve is provided with a measuring range scale mark (102); the lower end of the sleeve is provided with a suction head (101);

a liquid storage cavity (201) is arranged in the middle of the middle pipe body (2); the inner side surface of the middle pipe body (2) is provided with a liquid blocking block (7); the liquid blocking block (7) comprises a cross-shaped protrusion (701), a cylinder (702) and a top seat (703); the cross-shaped protrusions (701) are fixedly arranged on the lower surface of the cylinder (702); the upper surface of the cylinder (702) is fixedly connected with the lower surface of the top seat (703); the diameter of the bottom surface of the cylinder (702) is smaller than that of the top seat (703); through holes (704) are uniformly formed at the edge of the top seat (703);

a first side glass tube (301) is arranged on the peripheral side surface of the upper tube body (3); a piston mechanism (5) is arranged in the first side glass tube (301); a second side glass tube (302) is arranged on the opposite side surface of the first side glass tube (301); the second side glass tube (302) is higher than the first side glass tube (301); and a second rubber cap (6) is arranged at the end part of the second side glass tube (302).

2. The quantitative dropper of claim 1, wherein the lower tube (1) and the middle tube (2) are connected by a thread fit or a sleeve.

3. The quantifiable dropper of claim 1 or 2, wherein the liquid storage chamber (201) and the liquid blocking block (7) are integrally formed with the central tube body (2); the middle pipe body (2) and the upper pipe body (3) are made of glass.

4. The quantifiable applicator dropper of claim 3 wherein the sleeve has a lower end diameter less than an upper end diameter; the sleeves are connected in a sleeving manner.

5. A quantifiable dropper as claimed in claim 1, 2 or 4, wherein the piston mechanism (5) comprises a rubber piston (501) and a push-pull handle (502); the rubber piston (501) is connected with the push-pull handle (502) in a gluing or clamping manner.

6. The quantitative dropper of claim 5, wherein the second rubber cap (6) is connected to the second side glass tube (302) by gluing or sleeving, and the size of the second rubber cap (6) is smaller than that of the first rubber cap (4).