CN211329440U - Sampling device for analytical chemistry - Google Patents

Abstract

The utility model discloses a sampling device for analytical chemistry, including first liquid storage pipe, be provided with the fourth ooff valve on the first casting tube of first liquid storage pipe lower extreme, the middle side of first liquid storage pipe is connected with the upper end side of second liquid storage pipe through first connecting pipe, and the pipe diameter of first liquid storage pipe is greater than the second liquid storage pipe, is provided with the second ooff valve on the first connecting pipe, is provided with the third ooff valve on the second casting tube of second liquid storage pipe lower extreme; compared with the prior art, the beneficial effects of the utility model are that: when the reagent sample volume is great, the reagent is through the quick large-traffic outflow of first stock solution pipe, and when the reagent sample volume is less, open the second ooff valve earlier, make in reagent flows into the second stock solution pipe through first connecting pipe, closing the second ooff valve, make a small amount of reagent follow the second stock solution pipe and flow, because the pipe diameter of first stock solution pipe is greater than the second stock solution pipe, consequently the liquid level through observing the second stock solution pipe descends to control a small amount of reagent sample more accurate.

Description

Sampling device for analytical chemistry

Technical Field

The utility model relates to a chemical analysis technical field specifically is a sampling device for analytical chemistry.

Background

Analytical chemistry is a science of analytical methods and theories about the study of chemical information about the composition, content, structure and morphology of a substance, and is an important branch of chemistry to identify which components are contained in a substance and from which components the substance is composed, to determine the relative content of the various components, to study the molecular structure or crystal of the substance;

in the reaction process of the analytical chemical experiment, most common reagents are placed in a reagent bottle or a sampling tube of a laboratory so as to be convenient for taking and taking during the experiment, but due to different reagent amounts required by different chemical reactions, the problem of inaccurate sampling amount can be caused when a small amount of samples are taken if the sampling tube is too large, but the problem of long sampling time or even insufficient reagent amount contained in the sampling tube can be caused if the sampling tube is too small; and at present reagent splash is the biggest bodily injury risk source that exists in the operation process when taking a sample, especially when sampling to reagents such as strong acid strong alkali, in order to avoid reagent splash to skin, need carry out multiple protection to the experimenter for the sampling process is complicated troublesome, for this reason, we propose a sampling device for analytical chemistry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sampling device for analytical chemistry to solve the problem that proposes among the above-mentioned background art.

A sampling device for analytical chemistry comprises a first liquid storage pipe, wherein a fourth switch valve is arranged on a first liquid discharging pipe at the lower end of the first liquid storage pipe, a first funnel is installed at the upper end of the first liquid storage pipe, a first switch valve is arranged at the lower end of the first funnel, the middle side surface of the first liquid storage pipe is connected with the upper end side surface of a second liquid storage pipe through a first connecting pipe, the pipe diameter of the first liquid storage pipe is larger than that of the second liquid storage pipe, a second switch valve is arranged on the first connecting pipe, a third switch valve is arranged on a second liquid discharging pipe at the lower end of the second liquid storage pipe, a second connecting pipe is installed at the upper end of the second liquid storage pipe, and a fifth switch valve is arranged on the second connecting pipe;

the upper end of the first liquid storage pipe is externally provided with a fixed sleeve, the side surface of the fixed sleeve is provided with a transverse rod end of a supporting folding rod, the supporting folding rod is an L-shaped folding rod, the lower end of a vertical rod of the supporting folding rod is inserted into a blind groove formed in the bottom rod, the cross sections of the supporting folding rod and the blind groove are both square, and the supporting folding rod is prevented from rotating in the blind groove; the lower extreme of sill bar is installed in one side upper end of base, the annular has been seted up on the base, the annular is the rectangle, the lower extreme that has inserted the protection casing in the annular, two through-holes have been seted up to the upper end of protection casing, the first casting tube of first stock pipe lower extreme and the second casting tube lower extreme of second stock pipe lower extreme insert respectively in two through-holes, and the internal diameter that inserts two through-holes is slightly greater than the external diameter of first casting tube and second casting tube respectively, is located first recess has still been seted up to the base upper surface of first casting tube and second casting tube lower extreme, is used for collecting the reagent of splash in the first recess.

Preferably, be located set up the second recess in the first recess of first casting pipe and second casting pipe lower extreme, the symmetry is provided with the fixed arc board of a plurality of in the second recess, fixed arc board passes through the interior wall connection of second spring and second recess, and the test tube inserts in the second recess after fixed arc board passes through the elasticity of second spring and fixes the test tube in the second recess, makes things convenient for the test tube to connect first deposit liquid pipe and the interior reagent of second deposit liquid pipe greatly.

Preferably, be provided with the collecting area in the lower extreme of base, the collecting area passes through outage and second recess intercommunication, the fluid-discharge tube with collecting area intercommunication is installed to one side of base, be provided with the sixth switch valve on the fluid-discharge tube, the connecting bend horizontal end with collecting area intercommunication is installed to the opposite side of base, the second funnel is installed to the vertical end upper end of connecting bend, and reagent in first recess and the second recess passes through the outage and flows in the collecting area, prevents that the reagent from volatilizing to can pour into and wash the reagent in the collecting area through second funnel and connecting bend, wash in the collecting area, the waste liquid after the washing is emitted from the fluid-discharge tube through opening the sixth switch valve.

Preferably, a first spring is connected between the lower end of the vertical rod of the support folding rod and the bottom of the blind groove, the first spring can buffer the pressure of the vertical rod, and meanwhile, the shock absorption and protection effects are achieved.

Preferably, the first lateral surface of depositing liquid pipe and second liquid storage pipe all is provided with the scale mark, and the scale mark precision of first liquid storage pipe is less than the second liquid storage pipe, and the first reagent sample volume of depositing in liquid pipe and the second liquid storage pipe of being convenient for observe by the scale mark.

Preferably, be provided with the rubber sleeve in the through-hole, the rubber sleeve plays protection and sealed effect to first casting pipe and second casting pipe.

Compared with the prior art, the beneficial effects of the utility model are that: a fourth switch valve is arranged on a first liquid discharging pipe passing through the lower end of the first liquid storing pipe, a first switch valve is arranged at the lower end of a first funnel arranged at the upper end of the first liquid storing pipe, the middle side surface of the first liquid storing pipe is connected with the upper end side surface of a second liquid storing pipe through a first connecting pipe, the pipe diameter of the first liquid storing pipe is larger than that of the second liquid storing pipe, the second switch valve is arranged on the first connecting pipe, a third switch valve is arranged on the second liquid discharging pipe at the lower end of the second liquid storing pipe, and a fifth switch valve is arranged on a second connecting pipe arranged at the upper end of the second liquid storing pipe; when the sampling amount of the reagent is large, the fourth switch valve and the first switch valve are opened, the reagent flows out through the first liquid discharging pipe in a fast large flow manner, when the sampling amount of the reagent is small, the second switch valve is opened first, the reagent flows into the second liquid storage pipe through the first connecting pipe, and when the second switch valve is closed, the third switch valve and the fifth switch valve are opened, a small amount of the reagent flows out from the second liquid discharging pipe;

the upper end of the first liquid storage pipe is provided with a transverse rod end for supporting a folding rod through a fixing sleeve, the lower end of a vertical rod for supporting the folding rod is inserted into a blind groove formed in a bottom rod, the lower end of the bottom rod is arranged at the upper end of one side of a base, the lower end of a protective cover is inserted into a ring groove formed in the base, and a first liquid discharging pipe at the lower end of the first liquid storage pipe and a second liquid discharging pipe at the lower end of the second liquid storage pipe are respectively inserted into two through holes formed in the upper end of the protective; when reagent sample, highly making first deposit liquid pipe and the high promotion that deposits the liquid pipe of second through promoting the support folding rod, place the beaker of taking a sample on the base again, insert the annular internal fixation with the lower extreme of protection casing again, make the protection casing detain outside the beaker, put down first deposit liquid pipe and second deposit liquid pipe again, make first liquid discharge pipe and second liquid discharge pipe pass the through-hole that the protection casing upper end is located the upper end of beaker, the rethread regulation is located fourth ooff valve or the third ooff valve of protection casing upper end, make reagent flow in the beaker, whole sampling process has effectively avoided reagent splash to the experimenter under the protection of protection casing on one's body.

Drawings

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

fig. 2 is a front view structural section view of the present invention;

fig. 3 is a structural cross-sectional view of the base of the present invention.

In the figure: 1. the liquid storage device comprises a first liquid storage pipe 101, a first liquid discharging pipe 2, a first funnel 3, a first switch valve 4, a first connecting pipe 41, a second switch valve 5, a second liquid storage pipe 501, a second liquid discharging pipe 6, a third switch valve 61, a fourth switch valve 7, a fifth switch valve 8, a second connecting pipe 9, a fixing sleeve 10, a supporting folding rod 11, a bottom rod 111, a blind groove 12, a first spring 13, a base 131, a first groove 132, a second groove 133, a liquid collecting area 134, a liquid discharging hole 135, an annular groove 14, a protective cover 141, a through hole 15, a rubber sleeve 16, a liquid discharging pipe 17, a sixth switch valve 18, a connecting bent pipe 19, a second funnel 20, a fixing arc plate 21, a second spring 22 and a scale mark.

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. 1-3, the present invention provides a technical solution: a sampling device for analytical chemistry comprises a first liquid storage tube 1, wherein a fourth switch valve 61 is arranged on a first liquid discharging tube 101 at the lower end of the first liquid storage tube 1, a first funnel 2 is arranged at the upper end of the first liquid storage tube 1, a first switch valve 3 is arranged at the lower end of the first funnel 2, the middle side surface of the first liquid storage tube 1 is connected with the upper end side surface of a second liquid storage tube 5 through a first connecting tube 4, the diameter of the first liquid storage tube 1 is larger than that of the second liquid storage tube 5, a second switch valve 41 is arranged on the first connecting tube 4, a third switch valve 6 is arranged on a second liquid discharging tube 501 at the lower end of the second liquid storage tube 5, a second connecting tube 8 is arranged at the upper end of the second liquid storage tube 5, and a fifth switch valve 7 is arranged on the second connecting tube 8; scale marks 22 are arranged on the outer side surfaces of the first liquid storage pipe 1 and the second liquid storage pipe 5, the precision of the scale marks 22 of the first liquid storage pipe 1 is smaller than that of the second liquid storage pipe 5, and the scale marks 22 are convenient for observing the reagent sampling amount in the first liquid storage pipe 1 and the second liquid storage pipe 5; when the reagent sample volume is great, open fourth ooff valve 61 and first ooff valve 3, the quick large-traffic outflow of reagent through first tapping pipe 101, when the reagent sample volume is less, open second ooff valve 41 earlier, make reagent flow into second stock solution pipe 5 in through first connecting pipe 4, close second ooff valve 41, open third ooff valve 6 and fifth ooff valve 7, make a small amount of reagent flow from second tapping pipe 501, because the pipe diameter of first stock solution pipe 1 is greater than second stock solution pipe 5, consequently, the liquid level through observing second stock solution pipe 5 descends to control a small amount of reagent sample more accurately.

The upper end of the first liquid storage pipe 1 is externally provided with a fixed sleeve 9, the side surface of the fixed sleeve 9 is provided with a transverse rod end of a support folding rod 10, the support folding rod 10 is an L-shaped folding rod, the lower end of a vertical rod of the support folding rod 10 is inserted into a blind groove 111 formed in a bottom rod 11, a first spring 12 is connected between the lower end of the vertical rod of the support folding rod 10 and the bottom in the blind groove 111, the first spring 12 can buffer the pressure of the vertical rod and play a role in shock absorption and protection, the cross sections of the support folding rod 10 and the blind groove 111 are both square, and the support folding rod 10 is prevented from rotating in the blind groove 111; the lower end of the bottom rod 11 is mounted at the upper end of one side of the base 13, the base 13 is provided with an annular groove 135, the annular groove 135 is rectangular, the lower end of the protective cover 14 is inserted into the annular groove 135, the upper end of the protective cover 14 is provided with two through holes 141, a first liquid discharging pipe 101 at the lower end of the first liquid storing pipe 1 and a second liquid discharging pipe 501 at the lower end of the second liquid storing pipe 5 are respectively inserted into the two through holes 141, the inner diameters of the two through holes 141 are slightly larger than the outer diameters of the first liquid discharging pipe 101 and the second liquid discharging pipe 501, a rubber sleeve 15 is arranged in each through hole 141, and the rubber sleeve 15 plays roles of collision prevention and sealing on the first liquid discharging pipe 101 and the second liquid discharging; the upper surface of the base 13 at the lower ends of the first liquid discharging pipe 101 and the second liquid discharging pipe 501 is further provided with a first groove 131, and the first groove 131 is used for collecting splashed reagents; when the reagent is sampled, the height of the first liquid storage pipe 1 and the height of the second liquid storage pipe 5 are lifted by lifting the height of the supporting folding rod 10, then the sampling beaker is placed on the base 13, the lower end of the protective cover 14 is inserted into the annular groove 135 to be fixed, the protective cover 14 is buckled outside the beaker, then the first liquid storage pipe 1 and the second liquid storage pipe 5 are put down, the first liquid discharge pipe 101 and the second liquid discharge pipe 501 penetrate through the through hole 141 at the upper end of the protective cover 14 to be positioned at the upper end of the beaker, then the fourth switch valve 61 or the third switch valve 6 at the upper end of the protective cover 14 is adjusted, the reagent flows into the beaker, and the reagent is effectively prevented from being splashed onto an experimenter in the whole sampling process under the protection of the protective cover 14.

Be located second recess 132 has been seted up in the first recess 131 of first casting pipe 101 and second casting pipe 501 lower extreme, the symmetry is provided with the fixed arc board 20 of a plurality of in the second recess 132, fixed arc board 20 passes through the interior wall connection of second spring 21 with second recess 132, and the test tube inserts in the second recess 132 after fixed arc board 20 fixes the test tube in second recess 132 through the elasticity of second spring 21, makes things convenient for the test tube to connect the reagent in first stock solution pipe 1 and the second stock solution pipe 5 greatly.

A liquid collecting area 133 is arranged in the lower end of the base 13, the liquid collecting area 133 is communicated with the second groove 132 through a liquid discharging hole 134, a liquid discharging pipe 16 communicated with the liquid collecting area 133 is installed on one side of the base 13, a sixth switch valve 17 is arranged on the liquid discharging pipe 16, a horizontal end of a connecting bent pipe 18 communicated with the liquid collecting area 133 is installed on the other side of the base 13, a second funnel 19 is installed at the upper end of the vertical end of the connecting bent pipe 18, reagents in the first groove 131 and the second groove 132 flow into the liquid collecting area 133 through the liquid discharging hole 134 to prevent the reagents from volatilizing, a neutralizing and cleaning reagent can be poured into the liquid collecting area 133 through the second funnel 19 and the connecting bent pipe 18 to flush the liquid collecting area 133, and waste liquid after flushing is discharged from the liquid discharging pipe 16 by opening the sixth switch valve 17.

The working principle is as follows: the utility model discloses when using, at first promote the high promotion that highly makes first liquid storage tube 1 and second liquid storage tube 5 of supporting folding rod 10, place the sample beaker on base 13 again, insert annular 135 internal fixation with the lower extreme of protection casing 14 again, make protection casing 14 detain outside the beaker, put down first liquid storage tube 1 and second liquid storage tube 5 again, make first casting pipe 101 and second casting pipe 501 pass the through-hole 141 that the protection casing 14 upper end is located the upper end of beaker, the fourth ooff valve 61 or the third ooff valve 6 that the rethread adjustment is located the protection casing 14 upper end, make reagent flow in the beaker.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A sampling device for analytical chemistry comprising a first reservoir tube, characterized in that: a fourth switch valve is arranged on a first liquid discharging pipe at the lower end of the first liquid storing pipe, a first funnel is installed at the upper end of the first liquid storing pipe, a first switch valve is arranged at the lower end of the first funnel, the middle side surface of the first liquid storing pipe is connected with the upper end side surface of a second liquid storing pipe through a first connecting pipe, the diameter of the first liquid storing pipe is larger than that of the second liquid storing pipe, a second switch valve is arranged on the first connecting pipe, a third switch valve is arranged on the second liquid discharging pipe at the lower end of the second liquid storing pipe, a second connecting pipe is installed at the upper end of the second liquid storing pipe, and a fifth switch valve is arranged on the second connecting pipe;

fixed cover is installed outward to the upper end of first liquid storage pipe, the side-mounting of fixed cover has the horizontal pole end that supports a roll over the pole, support the blind inslot that sets up on the montant lower extreme that rolls over the pole inserts the sill bar, the lower extreme of sill bar is installed in one side upper end of base, the annular has been seted up on the base, the lower extreme of protection casing has been inserted in the annular, two through-holes have been seted up to the upper end of protection casing, the second casting tube of first casting tube and the second casting tube lower extreme of first liquid storage pipe lower extreme inserts respectively in two through-holes, is located first recess has still been seted up to the base upper surface of first casting tube and second casting tube lower extreme.

2. A sampling device for analytical chemistry according to claim 1, wherein: and a second groove is formed in the first groove at the lower end of the first liquid discharge pipe and the lower end of the second liquid discharge pipe, a plurality of fixed arc plates are symmetrically arranged in the second groove, and the fixed arc plates are connected with the inner wall of the second groove through a second spring.

3. A sampling device for analytical chemistry according to claim 1, wherein: the improved liquid storage device is characterized in that a liquid collection area is arranged in the lower end of the base and is communicated with the second groove through a liquid discharge hole, a liquid discharge pipe communicated with the liquid collection area is installed on one side of the base, a sixth switch valve is arranged on the liquid discharge pipe, the horizontal end of a connecting bent pipe communicated with the liquid collection area is installed on the other side of the base, and a second funnel is installed at the upper end of the vertical end of the connecting bent pipe.

4. A sampling device for analytical chemistry according to claim 1, wherein: and a first spring is connected between the lower end of the vertical rod of the support folding rod and the bottom in the blind groove.

5. A sampling device for analytical chemistry according to claim 1, wherein: the lateral surface of first stock solution pipe and second stock solution pipe all is provided with the scale mark.

6. A sampling device for analytical chemistry according to claim 1, wherein: and a rubber sleeve is arranged in the through hole.

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