CN211755109U - Sulfuric acid dropwise adding device - Google Patents
Sulfuric acid dropwise adding device Download PDFInfo
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- CN211755109U CN211755109U CN202020024283.4U CN202020024283U CN211755109U CN 211755109 U CN211755109 U CN 211755109U CN 202020024283 U CN202020024283 U CN 202020024283U CN 211755109 U CN211755109 U CN 211755109U
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Abstract
The utility model provides a sulphuric acid dropwise add device, including scale volumetric flask, bottle lid, glass feed liquor pipe, glass drain pipe, glass syringe and three-way valve. The outer side wall of the bottle cap is provided with an external thread which is matched and fixedly connected with an internal thread arranged at an opening at the top of the graduated volumetric flask, and the bottle cap is provided with a through hole communicated with the graduated volumetric flask; the three-way valve is fixed at the top of the bottle cap; a glass liquid inlet pipe is arranged in the scale volumetric flask, the bottom of the glass liquid inlet pipe is inserted below the liquid level in the scale volumetric flask, and the top of the glass liquid inlet pipe penetrates through the through hole to be communicated with the opening at the bottom of the three-way valve; the glass liquid outlet pipe is communicated with an opening on the left side of the three-way valve; the glass injector is communicated with an opening at the top of the three-way valve. The utility model provides a pair of sulphuric acid dropwise add device has solved current sulphuric acid dropwise add device operation inconvenient, can not accurate dropwise add and lead to the unsafe problem of experimental result.
Description
Technical Field
The utility model belongs to the technical field of equipment for the experiments, more specifically relates to a sulphuric acid dropwise add device.
Background
Need get soil sample and plant sample and measure nitrogen content in the experiment of current crop field, need get a certain amount of sulphuric acid and drip into and be located the test tube sample and carry out high temperature digestion at Kjeldahl azotization in-process, this link is time-consuming and hard, do not have other better instruments to replace current glass syringe and accomplish this operation, the laboratory staff need pour sulphuric acid into the beaker when operating and add, easily spill high concentration sulphuric acid to test bench corrosion experiment mesa when the operation is not standardized, cause the damage of other instruments, the laboratory staff clothing, the skin injury, sulphuric acid drips the volume and often exists inaccurate effect that can not reach expectation and influence the test process simultaneously.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a sulphuric acid dropwise add device to it is inconvenient to solve current sulphuric acid dropwise add operation, the unsafe problem of dropwise add volume.
In order to achieve the technical purpose, the technical scheme of the utility model provides a sulfuric acid dripping device, wherein the outer side wall of the bottle cap is provided with an external thread which is matched and fixedly connected with an internal thread arranged at the opening at the top of the graduated volumetric flask, and the bottle cap is provided with a through hole for the top of the glass liquid inlet pipe to pass through; the three-way valve is fixed at the top of the bottle cap and comprises three openings, namely a bottom opening, a left opening and a top opening; the glass liquid inlet pipe is arranged in the scale volumetric flask, the bottom of the glass liquid inlet pipe is inserted below the liquid level in the scale volumetric flask, and the top of the glass liquid inlet pipe penetrates through the through hole to be communicated with the opening at the bottom of the three-way valve; the glass liquid outlet pipe is communicated with an opening on the left side of the three-way valve; the bottom of the glass syringe is open.
Furthermore, the bottom opening of the three-way valve is fixedly connected with a liquid inlet valve, the top of the glass liquid inlet pipe is communicated with a liquid inlet of the liquid inlet valve, and a liquid outlet of the liquid inlet valve is communicated with the bottom opening of the three-way valve.
Furthermore, the opening on the left side of the three-way valve is also fixedly connected with a liquid outlet valve, and the liquid outlet valve is communicated with the opening on the left side of the three-way valve.
Furthermore, vaseline is smeared at the joint of the bottom of the three-way valve and the liquid inlet valve.
Further, the liquid inlet valve is the same as the liquid outlet valve.
Furthermore, scales are arranged on the glass syringe.
Compared with the prior art, the beneficial effects of the utility model include: the utility model provides a sulphuric acid dropwise add device can not cause sulphuric acid spraying at sulphuric acid dropwise add in-process, can also accurately measure sulphuric acid's quantity simultaneously, and simple structure, convenient operation has improved the efficiency and the accuracy of experiment.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a sulfuric acid dropping device provided by the present invention;
FIG. 2 is a schematic diagram of the construction of one embodiment of a three-way valve;
fig. 3 is a schematic structural view of an embodiment of a bottle cap;
FIG. 4 is a schematic structural view of an embodiment in which a three-way valve is connected to an injector and a glass inlet pipe;
description of reference numerals:
1-graduated volumetric flask, 2-glass liquid inlet pipe, 3-bottle cap, 4-liquid inlet valve, 5-three-way valve, 6-glass injector, 7-glass liquid outlet pipe and 8-liquid outlet valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to solve current nitrogen content measurement process, sulphuric acid dropwise add operation is inconvenient, causes sulphuric acid to splash and the unsafe problem of dropwise add volume easily, the embodiment of the utility model provides a sulphuric acid dropwise add device specifically can refer to fig. 1 to fig. 4. Fig. 1 is a schematic structural diagram of an embodiment of a sulfuric acid dripping device provided by the present invention. Fig. 2 is a schematic structural diagram of an embodiment of a three-way valve. Fig. 3 is a schematic structural view of an embodiment of a bottle cap. FIG. 4 is a schematic structural view of an embodiment in which a three-way valve is connected to an injector and a glass inlet pipe.
As shown in fig. 1 and 4, the sulfuric acid dripping device comprises a graduated volumetric flask 1, a glass liquid inlet pipe 2, a bottle cap 3, a three-way valve 5, a glass syringe 6 and a glass liquid outlet pipe 7. The outer side wall of the bottle cap 3 is provided with an external thread which is matched and fixedly connected with an internal thread arranged at the opening at the top of the graduated volumetric flask 1, and the bottle cap 3 is provided with a through hole for the glass liquid inlet pipe 2 to pass through; the three-way valve 5 is fixed at the top of the bottle cap 3, and the fixed connection can be realized by bolts; the glass liquid inlet pipe 2 is positioned in the scale volumetric flask 1, the bottom of the glass liquid inlet pipe 2 is inserted below the liquid level in the scale volumetric flask 1, and the top of the glass liquid inlet pipe 2 penetrates through the through hole to be communicated with the opening at the bottom of the three-way valve 5; the glass liquid outlet pipe 7 is communicated with an opening on the left side of the three-way valve 5; the glass syringe 6 is open at the bottom.
The three-way valve 5 is an existing three-way valve comprising a bottom opening, a top opening and a left opening, and the bottom opening can be communicated with the top opening by adjusting the position of a valve core; or the top opening is communicated with the left opening, which can be obtained by purchasing, and the specific structure is not described in detail herein.
The working principle of the sulfuric acid dripping device is as follows: when the sample in the test tube needs to be quantitatively dripped with sulfuric acid, the bottom opening and the top opening of the three-way valve 5 are communicated by adjusting the position of the valve core, and the glass syringe 6 quantitatively sucks the sulfuric acid in the graduated volumetric flask 1; after the absorption, the position of the valve core is adjusted, the top opening of the three-way valve 5 is communicated with the left opening, and the glass injector 6 is used for dropwise adding the absorbed sulfuric acid into the test tube from the glass liquid outlet tube 7. The spraying of sulphuric acid can not be caused in the whole process, the dosage of sulphuric acid can also be accurately measured, and the structure is simple and the operation is convenient.
The bottom of the glass injector is detachably and fixedly connected with the top of the three-way valve, and the glass injector and the three-way valve can also be movably connected without direct connection; the glass syringe can be replaced according to the required addition amount of sulfuric acid.
As shown in fig. 1 and 2, in order to further facilitate the control of the speed of sucking and discharging the sulfuric acid, a liquid inlet valve 4 is further fixedly connected to the bottom opening of the three-way valve 5, the top of the glass liquid inlet pipe 2 is communicated with the liquid inlet of the liquid inlet valve 4, and the liquid outlet of the liquid inlet valve 4 is communicated with the bottom opening of the three-way valve 5. The left opening part of three-way valve 5 is fixedly connected with liquid outlet valve 8, liquid outlet valve 8 with the left opening of three-way valve 5 communicates.
The liquid suction and taking actions of the injector can be more conveniently controlled by controlling the liquid inlet valve 4 and the liquid outlet valve 8.
In order to effectively absorb the sulfuric acid in the graduated volumetric flask 1 into the glass syringe 6 and avoid the situation that the sulfuric acid cannot be effectively absorbed due to leakage at the joint of the liquid inlet valve 4 and the three-way valve 5, Vaseline is coated at the joint of the bottom of the three-way valve 5 and the liquid inlet valve 4 for sealing use.
The liquid inlet valve 4 and the liquid outlet valve 8 can adopt valves with the same structure, and the valves can be conventional manual valves used for adjusting the flow rate of liquid in the prior art.
In order to make the measuring of the sulphuric acid more accurate, the glass syringe 6 is provided with a scale.
The utility model provides a sulphuric acid dropwise add device simple structure, convenient operation, the emission of the absorption of whole process sulphuric acid can not cause sulphuric acid to spray, and can the accurate use amount of measuring sulphuric acid, and then has improved the efficiency and the accuracy of experiment.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A sulfuric acid dripping device is characterized by comprising a graduated volumetric flask, a bottle cap, a glass liquid inlet pipe, a glass liquid outlet pipe, a glass syringe and a three-way valve;
the outer side wall of the bottle cap is provided with an external thread which is matched and fixedly connected with an internal thread arranged at an opening at the top of the graduated volumetric flask, and the bottle cap is provided with a through hole for the top of the glass liquid inlet pipe to pass through;
the three-way valve is fixed at the top of the bottle cap and comprises three openings, namely a bottom opening, a left opening and a top opening;
the glass liquid inlet pipe is arranged in the scale volumetric flask, the bottom of the glass liquid inlet pipe is inserted below the liquid level in the scale volumetric flask, and the top of the glass liquid inlet pipe penetrates through the through hole to be communicated with the opening at the bottom of the three-way valve;
the glass liquid outlet pipe is communicated with an opening on the left side of the three-way valve;
the bottom of the glass syringe is open.
2. The sulfuric acid dripping device according to claim 1, wherein a liquid inlet valve is further fixedly connected to the bottom opening of the three-way valve, the top of the glass liquid inlet pipe is communicated with a liquid inlet of the liquid inlet valve, and a liquid outlet of the liquid inlet valve is communicated with the bottom opening of the three-way valve.
3. The sulfuric acid dripping device according to claim 2, wherein a liquid outlet valve is further fixedly connected to the opening on the left side of the three-way valve, and the liquid outlet valve is communicated with the opening on the left side of the three-way valve.
4. The sulfuric acid dropping device according to claim 2, wherein vaseline is applied to the joint of the bottom of the three-way valve and the liquid inlet valve.
5. The sulfuric acid dropping device according to claim 3, wherein the liquid inlet valve and the liquid outlet valve have the same structure.
6. The sulfuric acid dropping device according to claim 1, wherein the glass syringe is provided with a scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020024283.4U CN211755109U (en) | 2020-01-07 | 2020-01-07 | Sulfuric acid dropwise adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020024283.4U CN211755109U (en) | 2020-01-07 | 2020-01-07 | Sulfuric acid dropwise adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211755109U true CN211755109U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020024283.4U Active CN211755109U (en) | 2020-01-07 | 2020-01-07 | Sulfuric acid dropwise adding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211755109U (en) |
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2020
- 2020-01-07 CN CN202020024283.4U patent/CN211755109U/en active Active
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