CN210036868U

CN210036868U - Chemical reagent sampler

Info

Publication number: CN210036868U
Application number: CN201920761455.3U
Authority: CN
Inventors: 周美; 王道平; 陈金宏; 胡恩明; 王瑜
Original assignee: Key Laboratory of Natural Product Chemistry of Guizhou Academy of Sciences
Current assignee: Key Laboratory of Natural Product Chemistry of Guizhou Academy of Sciences
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-02-07
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a chemical reagent sampler, which comprises a straight main duct, an inlet and outlet duct which is used for extending into a reagent bottle and is contacted with the bottom of the reagent bottle, and a two-way duct which is fixed at the top end of the main duct and is communicated with the cavity of the main duct; the top end of the two-way pipe is fixedly communicated with a liquid sucking and releasing mechanism for sucking and releasing the reagent in the reagent bottle. The utility model can safely and quickly absorb the reagent in the reagent bottle for use when the chemical reagent needs to be taken in the chemical experiment, and avoids the injury to an operator caused by reagent splashing when the reagent bottle is poured in the chemical experiment for taking the reagent; simultaneously according to the action of gravity rapidly through bend the pipe with the round hole enter into the approach tube in, shortened the time that the reagent absorbs, be favorable to this chemistry experiment with the popularization and use of reagent sampler.

Description

Chemical reagent sampler

Technical Field

The utility model relates to a chemistry experiment apparatus technical field specifically is a chemistry experiment uses reagent sampler in room.

Background

As is well known, chemical reagents are basic materials for scientific research, and chemical solutions are generally obtained through measuring cups, measuring cylinders, or droppers in experiments. Though the measuring cup or the measuring cylinder is simple, the pouring and metering are difficult to control, splashing is easily caused, and potential safety hazards exist, such as: concentrated sulfuric acid used when polysaccharides in traditional Chinese medicines are measured by a phenol-sulfuric acid method, and aqua regia used for digestion has strong corrosivity to skin when trace elements in a water sample are measured; pyridine, tetrahydrofuran, chloroform, etc. used in the separation of natural active substances have strong permeability to skin and all have nerve injury and carcinogenic effects; trifluoroacetic acid used for measuring the content of baicalin in the scutellaria baicalensis and dimethyl sulfoxide used for dissolving standard substances have strong irritation on eyes, mucous membranes, respiratory tracts and skin. The dropper is safe and can not form splash, but has low efficiency and can not quantify. In order to improve the scientific research efficiency and reduce the damage of chemical reagents to experiment operators, a chemical reagent sampler needs to be designed urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a safe and reliable, convenient to use, the accurate chemical reagent sampler of measurement have solved and have directly emptyd the reagent and have taken place easily to spatter and spill, the difficult control of measurement to and the problem that burette sampling efficiency is low.

In order to achieve the above object, the utility model provides a following technical scheme:

a reagent sampler for a chemical laboratory comprises a straight main duct, an inlet and outlet duct which is used for extending into a reagent bottle and is contacted with the bottom of the bottle, and a two-way duct which is fixed at the top end of the main duct and is communicated with the main duct; the top end of the two-way pipe is fixedly communicated with a liquid sucking and releasing mechanism for sucking and releasing the reagent in the reagent bottle, the access pipe is communicated with the main catheter, and the access pipe is arranged at the bottom end of the main catheter and is of an integrated structure with the main catheter.

The in-out pipe comprises a guide pipe with a U-shaped structure, a bent pipe which is vertically fixed at the top end of the right vertical section of the guide pipe and is of an inverted N-shaped structure, and round holes distributed on the pipe wall of the bent pipe.

The top end of the left vertical section of the guide tube and the bottom end of the main guide tube are of an integrated structure, the inner cavity of the guide tube is communicated with the tube cavity of the main guide tube, and the right vertical section of the guide tube is one sixth of the left vertical section of the guide tube.

The bottom end of the bending pipe is communicated with the top end of the right vertical section of the guide pipe, and the vertical length of the bending pipe is one sixth of that of the left vertical section of the guide pipe.

Liquid is inhaled and is put mechanism by vertical fixation in two-way pipe top and be the connecting pipe of lining up the structure from top to bottom, transversely be fixed in the connecting pipe top and be the even piece of cylindric structure, be fixed in even the handheld ring that the piece top is down "U" structure, the activity in proper order passes under the handheld ring perpendicularly horizontal straight section and even piece bottom and extend into the connecting pipe and have the post that pushes away of scale, be located the connecting pipe lumen and fix the piston in the post bottom that pushes away, and transversely install under the handheld ring horizontal straight section top and fix the depression bar constitution on the post top that pushes away.

The upper transverse straight section and the lower transverse straight section of the handheld ring are both fixed with spherical blocks a, the right side of the pressure rod is fixed with spherical blocks b, the outer side wall of the piston is tightly attached to the inner wall of the tube cavity of the connecting tube, and the vertical length of the push column is four-thirds of the vertical length of the connecting tube.

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

the utility model discloses an discrepancy pipe and liquid of setting are inhaled and are put the mechanism, have improved the holistic structure of this sampler, rely on liquid to inhale and put the mechanism and inhale the pipe safe reagent of absorbing fast that comes in and goes out to avoid directly toppling over reagent and take place to spatter and spill and cause the injury. In addition, the push column is provided with scales, so that the medicine liquid sucking amount can be accurately controlled. Because the bending pipe with the round holes distributed on the surface is adopted, the suction quantity can be increased, the suction time can be shortened, and the operation efficiency can be improved.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a schematic structural view of the liquid sucking and discharging mechanism of the present invention;

fig. 3 is an enlarged schematic view of a structure shown in fig. 1 according to the present invention.

In the figure: 1 main guide pipe, 2 inlet and outlet pipes, 21 guide pipes, 22 bending pipes, 23 round holes, 3 two-way pipes, 4 liquid suction and discharge mechanisms, 41 connecting pipes, 42 connecting blocks, 43 handheld rings, 44 push columns, 45 pistons and 46 pressure rods.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, a reagent sampler for a chemical laboratory comprises a straight main duct 1, an inlet/outlet duct 2 for extending into a reagent bottle and contacting with the bottom of the reagent bottle, and a bypass duct 3 fixed on the top of the main duct 1 and communicating with the lumen of the main duct 1; the top end of the two-way pipe 3 is fixedly communicated with a liquid sucking and releasing mechanism 4 for sucking and releasing the reagent in the reagent bottle, the inner cavity of the access pipe 2 is communicated with the tube cavity of the main catheter 1, and the access pipe 2 is arranged at the bottom end of the main catheter 1 and is in an integrated structure with the main catheter 1.

The inlet and outlet pipe 2 comprises a guide pipe 21 with a U-shaped structure in the main view appearance, a bent pipe 22 which is vertically fixed at the top end of the right vertical section of the guide pipe 21 and is of an inverted N-shaped structure, and round holes 23 which are distributed at intervals and run through the pipe wall of the bent pipe 22; the top end of the left vertical section of the guide tube 21 and the bottom end of the main guide tube 1 are in an integrated structure, the inner cavity of the guide tube 21 is communicated with the tube cavity of the main guide tube 1, and the right vertical section of the guide tube 21 is one sixth of the left vertical section of the guide tube 21; the bottom end of the bending pipe 22 is communicated with the top end of the right vertical section of the guide pipe 21, and the vertical length of the bending pipe 22 is one sixth of the length of the left vertical section of the guide pipe 21.

The liquid sucking and releasing mechanism 4 is composed of a connecting pipe 41 which is vertically fixed on the top end of the two-way pipe 3 and has a vertical through structure, a connecting block 42 which is transversely fixed on the top end of the connecting pipe 41 and has a cylindrical structure, a handheld ring 43 which is fixed on the top end of the connecting block 42 and has an inverted U-shaped structure, a push post 44 which sequentially and movably vertically penetrates through the lower horizontal section of the handheld ring 43 and the bottom end of the connecting block 42 and extends into the connecting pipe 41 and is provided with scales, a piston 45 which is positioned in the pipe cavity of the connecting pipe 41 and is fixed on the bottom end of the push post 44, and a pressure lever 46 which is transversely arranged on the top of the lower horizontal section.

The spherical blocks a are fixed at the right ends of the upper transverse straight section and the lower transverse straight section of the handheld ring 43, a protruding mechanism can be formed on the right side of the handheld ring 43 by the aid of the spherical blocks a, so that the surface roughness of the handheld ring 43 is increased, an operator can hold the handheld ring 43 to operate the sampler more stably and conveniently, the spherical blocks b are fixed on the right side of the pressure rod 46, the outer side wall of the piston 45 is tightly attached to the inner wall of the tube cavity of the connecting tube 41, and the vertical length of the push column 44 is four thirds of the vertical length of the connecting tube 41; the spherical block b can increase the roughness of the surface of the pressure lever 46, and is convenient for stably holding or pulling the pressure lever 46.

The utility model improves the whole structure of the sampler by arranging the inlet and outlet pipe 2 and the liquid sucking and discharging mechanism 4, and the reagent is safely and quickly sucked by the liquid sucking and discharging mechanism 4 and the inlet and outlet pipe 2, so that the reagent bottle is prevented from splashing when being directly dumped; meanwhile, the reagent can rapidly enter the guide tube 21 through the bent tube 22 and the round hole 23 according to the action of gravity, and the reagent suction time is shortened.

Wherein, bend pipe 22 and round hole 23 can increase the whole contact surface with reagent in the reagent bottle of discrepancy pipe 2 to can adsorb the storage with reagent in the middle of the skirt 21 of discrepancy pipe 2 fast.

The working principle is as follows: when the reagent sampler is used, an operator holds the reagent sampler by the hand-held ring 43 to perform sampling work on the chemical reagent, at the moment, when the liquid sucking and releasing mechanism 4 is not used, the piston 45 is positioned to abut against the bottom of the inner cavity of the connecting pipe 41, and the compression rod 46 is close to the top of the lower transverse straight section of the hand-held ring 43. During sampling, firstly, the inlet and outlet pipe 2 vertically extends into the reagent bottle, the bottom end of the guide pipe 21 in the inlet and outlet pipe 2 is contacted with the bottom end of the reagent bottle, then the pressure rod 46 is lifted upwards, the pressure rod 46 moves upwards to drive the push column 44 to move upwards, the push column 44 drives the piston 45 to move upwards in the connecting pipe 41, and negative pressure is formed in the connecting pipe 41 when the piston 45 moves upwards, so that the reagent can be sucked along the bending pipe 22 and the round hole 23 and enters the main guide pipe 1 through the guide pipe 21; the plunger 45 can push out the reagent in the lead tube 21 by pressing down the push rod 46.

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 chemical reagent sampler comprises a straight main duct (1), an inlet and outlet duct (2) which is used for extending into a reagent bottle and is contacted with the bottom of the bottle, and a two-way duct (3) which is fixed at the top end of the main duct (1) and is communicated with the main duct (1); the method is characterized in that: the top of two-way pipe (3) is fixed the intercommunication and is had liquid that is used for inhaling the interior reagent of putting the reagent bottle and inhale and put mechanism (4), discrepancy pipe (2) link up with main duct (1) mutually, and discrepancy pipe (2) are installed in the bottom of main duct (1) and are the integral structure with main duct (1).

2. A chemical sampler as claimed in claim 1, wherein: the inlet and outlet pipe (2) comprises a guide pipe (21) with a U-shaped structure, a bent pipe (22) which is vertically fixed at the top end of the right vertical section of the guide pipe (21) and is of an inverted N-shaped structure, and round holes (23) distributed on the pipe wall of the bent pipe (22).

3. A chemical sampler as claimed in claim 2, wherein: the top end of the left vertical section of the guide tube (21) and the bottom end of the main guide tube (1) are of an integrated structure, the inner cavity of the guide tube (21) is communicated with the tube cavity of the main guide tube (1), and the right vertical section of the guide tube (21) is one sixth of the left vertical section of the guide tube (21).

4. A chemical sampler as claimed in claim 2, wherein: the bottom end of the bending pipe (22) is communicated with the top end of the right vertical section of the guide pipe (21), and the vertical length of the bending pipe (22) is one sixth of the length of the left vertical section of the guide pipe (21).

5. A chemical sampler as claimed in claim 1, wherein: liquid is inhaled and is put mechanism (4) by vertical fixation in two-way pipe (3) top and be connecting pipe (41) of lining up the structure from top to bottom, transversely be fixed in connecting pipe (41) top and be even piece (42) of cylindric structure, be fixed in even handheld ring (43) that piece (42) top is the structure of falling "U", activity in proper order is passed under handheld ring (43) horizontal straight section and even piece (42) bottom and is extended into connecting pipe (41) and have push pillar (44) of scale, be located connecting pipe (41) lumen and fix piston (45) in push pillar (44) bottom, and transversely install in under handheld ring (43) horizontal straight section top and fix depression bar (46) constitution on push pillar (44) top.

6. A chemical reagent sampler as claimed in claim 5, wherein: the right ends of the upper transverse straight section and the lower transverse straight section of the handheld ring (43) are respectively fixed with a spherical block a, the right side of the pressure rod (46) is fixed with a spherical block b, the outer side wall of the piston (45) is tightly attached to the inner wall of the tube cavity of the connecting tube (41), and the vertical length of the push column (44) is four-thirds of the vertical length of the connecting tube (41).