CN211677802U

CN211677802U - Portable dropper

Info

Publication number: CN211677802U
Application number: CN201921933273.6U
Authority: CN
Inventors: 季元春
Original assignee: Jiangsu Deli Heavy Industry Co ltd
Current assignee: Jiangsu Deli Heavy Industry Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-10-16
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a portable dropper, which comprises a rubber nipple, a sharp-nose glass tube and a piston, wherein one end of the rubber nipple is pasted with a connecting tube, one end of the connecting tube is in threaded connection with the sharp-nose glass tube, and one end of the sharp-nose glass tube is pasted with a sealing ring; the utility model discloses a be equipped with the piston, scale table and stopper, and through extrusion nipple, can promote the piston and remove downwards, insert sharp mouth glass pipe one end in the liquid, it can be intraduct with liquid suction sharp mouth glass to loosen nipple, and through being equipped with the piston, even keep flat or invert the burette and place on the desktop, also can prevent in the liquid refluence to the nipple in the burette, avoid the nipple to be corroded, the life of burette has been prolonged, and through being equipped with stopper and graduation apparatus, the distance that the piston removed can be controlled, and then the volume of the liquid that the burette absorb at every turn can be controlled.

Description

Portable dropper

Technical Field

The utility model relates to a burette technical field specifically is a portable burette.

Background

The dropper is divided into a fat belly dropper and a common dropper, and comprises a rubber nipple and a sharp-mouth glass tube, a small amount of reagent is sucked or added, supernatant liquid is sucked, precipitates are separated, when the dropper is used, the dropper is kept to be vertical to the position right above a container, the dropper is prevented from inclining and is forbidden to stand upside down, the dropper cannot stretch into the container and cannot touch the container wall, except for sucking the solution, the tube tip cannot contact other devices so as to avoid impurity contamination, the dropper can not be used for one tube, the common dropper needs to be cleaned after being used up, a special dropper cannot be cleaned and is special for special tubes, the dropper can be put back to an original reagent bottle after being used up, when the dropper is used, the rubber nipple is pinched by fingers to expel air in the dropper, then the dropper is stretched into the reagent bottle to flow backwards, the reagent is sucked after fingers are released, the dropper after liquid taking is kept above the rubber head and does not need to be horizontally placed or inverted, the corrosion of the, the dropper is suspended above a beaker and does not need to contact the wall of the beaker so as to avoid polluting the dropper or polluting reagents, the used dropper is washed clean by clear water immediately for reuse, and other reagents are not sucked by the uncleaned dropper strictly, when the dropper is used, the dropper is clamped by a middle finger and a ring finger by only pinching the thumb and the index finger, and the dropper is not needed to be placed on a test bench or other places after being used or cleaned, however, the current dropper has some defects, such as:

after absorbing a certain amount of liquid, the dropper in the prior art can not be flatly prevented or placed upside down on a table top, because the liquid in the dropper can flow back to the inside of the nipple of rubber, the corrosion of the nipple of rubber is caused, and then the dropper is abandoned, the service life of the dropper is reduced, and when the existing dropper is used, all air in the nipple of rubber is generally discharged, and then the liquid is absorbed, and the liquid which needs to be absorbed in a certain volume at each time can not be controlled, in addition, when the dropper needs to be taken out, the carrying of the dropper is very troublesome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable burette to solve the problem that proposes 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 portable burette, includes nipple, sharp mouth glass pipe and piston, nipple one end is pasted and is had the connecting pipe, connecting pipe one end threaded connection has sharp mouth glass pipe, the sealing washer has been pasted to sharp mouth glass pipe one end, sharp mouth glass pipe inner wall both sides are close to top department and all have pasted the stopper, sharp mouth glass pipe both sides and piston sliding connection, the graduation apparatus has been pasted to sharp mouth glass pipe one side.

Preferably, a fixed block and a supporting block are sleeved on the periphery of the connecting pipe, the fixed block and the supporting block are adhered to the connecting pipe, a second head cover is connected to one end of the periphery of the supporting block through threads, first through holes are formed in the middle of the upper surfaces of the fixed block and the supporting block, a fixed plate is adhered to the upper surface of the fixed block, a second through hole is formed in the middle of the upper surface of the fixed plate, one end of the nipple of the rubber is penetrated through the second through hole, and one end of the periphery of the fixed block is connected to the first head.

Preferably, the periphery of the piston is sleeved with a rubber ring, and the diameter of the connecting pipe is equal to the diameter of the inner wall at the top end of the sharp-mouth glass pipe.

Preferably, the length of the edge of the first head cover is larger than that of the nipple, and the length of the edge of the second head cover is larger than that of the sharp-mouth glass tube.

Preferably, the upper surface of the piston is fixedly connected with a pull rope through a bolt, the length of the second through hole is larger than that of the bottom end of the nipple, and the diameter of the first through hole is equal to that of the connecting pipe.

Preferably, the rubber pad has all been pasted to fixed block upper surface and lower surface, first skull with the second skull all is cylindrical structure, just first skull with second skull diameter size with fixed block diameter size equals.

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

the utility model discloses a be equipped with the piston, scale table and stopper, and through extrusion nipple, can promote the piston downstream, insert sharp mouth glass pipe one end in the liquid, it can be intraduct with liquid suction sharp mouth glass pipe to loosen nipple, and through being equipped with the piston, even place the burette on the desktop flatly or invert, also can prevent in the liquid refluence the nipple in the burette, avoid the nipple to be corroded, the life of burette has been prolonged, and through being equipped with stopper and graduation apparatus, can control the distance that the piston removed, and then can control the volume of the liquid that the burette was absorb at every turn, in addition through being equipped with first skull and second skull, can fix the both ends of burette inside first skull and second skull, and convenient to carry, bring the convenience for the user.

Drawings

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

FIG. 2 is a schematic sectional view of the piston of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

fig. 4 is a schematic view of the piston overlooking connection structure of the present invention.

In the figure: 1-fixing block; 2, fixing a plate; 3-a first head cover; 4-a support block; 5-a second head cover; 6-nipple of a nipple; 7-sharp-nose glass tube; 8-connecting pipe; 9-a first via; 10-a second via; 11-a limiting block; 12-a sealing ring; 13-a piston; 14-a rubber ring; 15-scale table.

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. 1-4, the present invention provides a technical solution: a portable dropper comprises a nipple 6, a sharp-mouth glass tube 7 and a piston 13, wherein a connecting tube 8 is pasted at one end of the nipple 6, the sharp-mouth glass tube 7 is in threaded connection with one end of the connecting tube 8, a sealing ring 12 is pasted at one end of the sharp-mouth glass tube 7, a limiting block 11 is pasted at the position, close to the top end, of each of two sides of the inner wall of the sharp-mouth glass tube 7, a limiting block 11 is pasted at the position, close to the top end, of each of two sides of the sharp-mouth glass tube 7, the two sides of the sharp-mouth glass tube 7 are in sliding connection with the piston 13, a dial gauge 15 is pasted at one side of the sharp-mouth glass tube 7, air inside the nipple 6 is completely extruded, the piston 13 can be moved to the bottom of the sharp-mouth glass tube 7, the piston 13 can be pushed to move downwards by extruding the nipple 6, one end of the sharp-mouth glass tube 7 is inserted, the fixed block 1 and the supporting block 4 are adhered to the connecting pipe 8, one end of the periphery of the supporting block 4 is in threaded connection with a second head cover 5, the middle parts of the upper surfaces of the fixed block 1 and the supporting block 4 are respectively provided with a first through hole 9, the upper surface of the fixed block 1 is adhered with a fixed plate 2, the middle part of the upper surface of the fixed plate 2 is provided with a second through hole 10, one end of the nipple 6 passes through the second through hole 10, one end of the periphery of the fixed block 1 is in threaded connection with a first head cover 3, the side length of the first head cover 3 is larger than that of the nipple 6, the side length of the second head cover 5 is larger than that of the sharp-mouth glass pipe 7, the upper surface of the piston 13 is fixedly connected with a pull rope through a bolt, the side length of the second through hole 10 is larger than that of the bottom end of the, the rubber pads are adhered to the upper surface and the lower surface of the fixing block 1, the first head cover 3 and the second head cover 5 are of cylindrical structures, the diameter size of the first head cover 3 and the diameter size of the second head cover 5 are equal to that of the fixing block 1, the dropper can be placed at any position at will by screwing the two ends of the dropper to the first head cover 3 and the second head cover 5 respectively, and therefore the dropper is convenient to carry.

The working principle is as follows: when in use, the piston 13 can be pushed to move downwards by pressing the nipple 6, one end of the sharp-mouth glass tube 7 is inserted into the liquid, the liquid can be sucked inside the glass tube 7 by loosening the nipple 6, and by providing the piston 13, even if the dropper is placed on a table top horizontally or inversely, the liquid in the dropper can be prevented from flowing back to the nipple 6, the nipple 6 is prevented from being corroded, the service life of the dropper is prolonged, the connecting pipe 8 is unscrewed by using the dial gauge 15, the distance between the piston 13 and the limiting block 11 is adjusted by the pull rope, further, the distance of the piston 13 can be controlled, so that the amount of liquid sucked by the dropper each time can be controlled, in addition, the first head cover 3 and the second head cover 5 are arranged, so that two ends of the dropper can be fixed inside the first head cover 3 and the second head cover 5, the dropper is convenient to carry, and convenience is brought to a user.

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. A portable dropper, comprising a nipple (6), a glass tube (7) and a piston (13), characterized in that: connecting pipe (8) have been pasted to nipple of rubber (6) one end, connecting pipe (8) one end threaded connection has sharp mouth glass pipe (7), sealing washer (12) have been pasted to sharp mouth glass pipe (7) one end, sharp mouth glass pipe (7) inner wall both sides are close to top department and have all pasted stopper (11), sharp mouth glass pipe (7) both sides and piston (13) sliding connection, point mouth glass pipe (7) one side has pasted graduation apparatus (15).

2. A portable dropper according to claim 1, wherein: connecting pipe (8) periphery has cup jointed fixed block (1) and supporting shoe (4), just fixed block (1) and supporting shoe (4) with connecting pipe (8) are pasted, supporting shoe (4) periphery one end threaded connection has second skull (5), first through-hole (9) have all been seted up at fixed block (1) and supporting shoe (4) upper surface middle part, fixed block (1) upper surface is pasted and has fixed plate (2), second through-hole (10) have been seted up at fixed plate (2) upper surface middle part, just nipple (6) one end is passed second through-hole (10), fixed block (1) periphery one end threaded connection has first skull (3).

3. A portable dropper according to claim 1, wherein: the periphery of the piston (13) is sleeved with a rubber ring (14), and the diameter of the connecting pipe (8) is equal to that of the inner wall of the top end of the sharp-mouth glass pipe (7).

4. A portable dropper according to claim 2, wherein: the side length of the first head cover (3) is larger than that of the nipple (6), and the side length of the second head cover (5) is larger than that of the sharp-nose glass tube (7).

5. A portable dropper according to claim 2, wherein: the upper surface of the piston (13) is fixedly connected with a pull rope through a bolt, the side length of the second through hole (10) is larger than that of the bottom end of the nipple (6), and the diameter of the first through hole (9) is equal to that of the connecting pipe (8).

6. A portable dropper according to claim 2, wherein: fixed block (1) upper surface and lower surface all have pasted the rubber pad, first skull (3) with second skull (5) all are cylindrical structure, just first skull (3) with second skull (5) diameter size with fixed block (1) diameter size equals.