CN210206902U - Closed concentrated sulfuric acid quantitative liquid taking device - Google Patents
Closed concentrated sulfuric acid quantitative liquid taking device Download PDFInfo
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- CN210206902U CN210206902U CN201921037927.7U CN201921037927U CN210206902U CN 210206902 U CN210206902 U CN 210206902U CN 201921037927 U CN201921037927 U CN 201921037927U CN 210206902 U CN210206902 U CN 210206902U
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- sulfuric acid
- liquid taking
- concentrated sulfuric
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Abstract
The utility model relates to the field of analytical chemistry equipment, in particular to a closed concentrated sulfuric acid quantitative liquid taking device, which comprises a sulfuric acid storage tank, a drying unit and a liquid taking unit, wherein the sulfuric acid storage tank is detachably connected with a sealing cover, and the sealing cover is fixedly connected with the drying unit and the liquid taking unit; the drying unit comprises a reaction chamber and two air pipes, the air pipes penetrate through the sealing cover and are fixedly connected with the sealing cover, and a water absorbing layer and an adsorption layer are sequentially arranged in the reaction chamber from top to bottom; the liquid taking unit comprises an injector and a liquid taking pipe, one end of the liquid taking pipe is fixedly connected with a nipple of the injector, the other end of the liquid taking pipe penetrates through the sealing cover and extends to the bottom of the sulfuric acid storage tank, a bent pipe and a return pipe are communicated and arranged on the liquid taking pipe, and the bent pipe and the transverse pipe are positioned at the same height; the vent pipe and the elbow pipe are provided with sealing parts for sealing; the utility model discloses can make the transfer of a small amount of reagent of concentrated sulfuric acid go on in being in a confined system with the volume of getting, effectively avoid the concentrated sulfuric acid in the glass bottle to take place rotten simultaneously.
Description
Technical Field
The utility model relates to an analytical chemistry equipment technical field is a confined concentrated sulfuric acid ration liquid device of getting particularly.
Background
In the field of chemical experimental teaching and scientific research, reagent concentrated sulfuric acid is often used, and is usually filled in a glass bottle for storage, taken out when needed and transferred to other containers, and sometimes taken out quantitatively.
In the prior art, when concentrated sulfuric acid is taken out quantitatively, a bottle stopper of a glass bottle needs to be opened, and then the concentrated sulfuric acid is taken out and transferred by using a specific container, and in the process of opening the bottle stopper, the concentrated sulfuric acid absorbs moisture in air to dilute the concentrated sulfuric acid in the glass bottle and absorbs reducing substances in the air to generate redox reaction, so that the concentrated sulfuric acid in the glass bottle is deteriorated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of above-mentioned prior art, the utility model aims at providing a liquid device is got to confined concentrated sulfuric acid ration can make the transfer of a small amount of reagent of concentrated sulfuric acid go on in being in a confined system with the volume, and the strong corrosive reagent that has significantly reduced takes place to deteriorate to the injury of human body and article simultaneously effectively to have avoided the concentrated sulfuric acid in the glass bottle.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a closed concentrated sulfuric acid quantitative liquid taking device comprises a sulfuric acid storage tank, a drying unit and a liquid taking unit, wherein a tank opening is formed in the top of the sulfuric acid storage tank, a sealing cover is detachably connected to the tank opening, and the drying unit and the liquid taking unit are fixedly connected to the sealing cover;
the drying unit comprises a reaction chamber and two air pipes, the two air pipes are respectively communicated and arranged at two ends of the reaction chamber, the reaction chamber is vertically arranged above the sealing cover, the air pipes positioned below the reaction chamber penetrate through the sealing cover and extend inwards for 1-5mm and are fixedly connected with the sealing cover, and a water absorbing layer and an adsorption layer are sequentially arranged in the reaction chamber from top to bottom;
the liquid taking unit comprises an injector and a liquid taking pipe, the injector is vertically arranged above the liquid taking pipe, one end of the liquid taking pipe is fixedly connected with the nipple of the injector, the other end of the liquid taking pipe penetrates through the sealing cover and extends to the bottom of the sulfuric acid storage tank, the liquid taking pipe is communicated with a bent pipe and a return pipe, the bent pipe is of an inverted L-shaped structure, the return pipe is a C-shaped pipe consisting of a transverse pipe and an L-shaped pipe, the reflux pipe is arranged on the liquid taking pipe along the vertical direction, both ends of the reflux pipe are communicated with the liquid taking pipe, the bent pipe and the transverse pipe are positioned at the same height, a first one-way valve is also arranged in the liquid taking pipe, the top of the first one-way valve is at the same height as the bottom of the transverse pipe, a second one-way valve is arranged at the connecting part of the bent pipe and the liquid taking pipe, and a valve is arranged at the connecting part of the transverse pipe and the liquid taking pipe;
and the vent pipe positioned above the reaction chamber and the other end of the elbow are provided with closing parts for closing.
Preferably, the reaction chamber comprises a top chamber and a bottom chamber, and the top chamber and the bottom chamber are identical in structure and are in threaded connection through mutually matched internal threads and external threads.
Preferably, the tank opening and the outer side of the sealing cover are jointly sleeved with a protective cover for preventing air from entering the sulfuric acid storage tank.
Preferably, a first stabilizing frame for stabilizing the reaction chamber on the sealing cover is arranged outside the reaction chamber.
Preferably, the first stabilizing frame comprises a lantern ring and a supporting rod, the lantern ring is sleeved on the outer side of the reaction chamber, the lantern ring is fixedly connected with the supporting rods which are symmetrically arranged, and the other ends of the supporting rods are fixedly connected to the sealing cover.
Preferably, a second stabilizing frame for stabilizing the liquid taking unit is arranged on the outer side of the injector, and the second stabilizing frame and the first stabilizing frame have the same structure.
Preferably, the water absorbing layer is a color-changing silica gel layer.
Preferably, the adsorption layer is a porous activated carbon layer.
Preferably, the bottoms of the water absorption layer and the adsorption layer are respectively padded with glass wool.
Preferably, the outer side wall of the tank opening is provided with external threads, and the inner side wall of the sealing cover is provided with internal threads matched with the external threads.
Compared with the prior art, the utility model discloses the beneficial effect who has is:
1. the utility model is provided with a drying unit, a water absorption layer and an adsorption layer are arranged in the reaction chamber of the drying unit in sequence, and the concentrated sulfuric acid has water absorption, so that the water absorption layer can dry the air entering the sulfuric acid storage tank; and because the concentrated sulfuric acid can react with the reducing substances in the air, when the air passes through the adsorption layer, the porous activated carbon layer adsorbs the reducing substances in the air, so that the concentrated sulfuric acid in the sulfuric acid storage tank after liquid taking is effectively prevented from deteriorating due to the fact that the concentrated sulfuric acid absorbs moisture in the air or has an oxidation-reduction reaction with the reducing substances in the air.
2. The utility model is provided with a liquid taking unit, concentrated sulfuric acid is sucked into an injector through a liquid taking pipe, the injector is provided with scales, the concentrated sulfuric acid can be quantitatively sucked out from a reagent bottle, because of the arrangement of a first one-way valve, redundant concentrated sulfuric acid in the liquid taking pipe above the first one-way valve can not flow back to a sulfuric acid storage tank through the liquid taking pipe, at the moment, a valve is opened, the redundant concentrated sulfuric acid can flow into the sulfuric acid storage tank through a return pipe, after the redundant concentrated sulfuric acid sucked into the liquid taking pipe flows out, the valve is closed, a second one-way valve is opened, the injector is pushed, the concentrated sulfuric acid enters a specific container through a bent pipe, the quantitative measurement of the concentrated sulfuric acid is realized, at the moment, a reaction chamber can adsorb moisture and reducing substances in the air, the whole process is carried out in a closed system, the transfer and the measurement of the concentrated, the bottle plug that need open the glass bottle among the prior art has significantly reduced, then takes out and shifts with specific container, causes the injury of strong corrosive reagent to human body and article, has realized concentrated sulfuric acid and has got sealed, safe, convenient, quick concentrated sulfuric acid liquid feeding device of liquid.
3. The utility model discloses a top room and the setting of dismantling of end room, and top room and end room structure are the same, consequently when top room and end room spiro union back together, the position of spiro union is located the central authorities of reacting chamber, if need change the interior color silica gel or the porous activated carbon of reacting chamber this moment, then can be with the top room by back room on screw off to change can, can get liquid device repetitious usage with this ration.
Drawings
Fig. 1 is a schematic structural view of a closed concentrated sulfuric acid quantitative liquid taking device of the present invention;
fig. 2 is a partial enlarged view of the closed concentrated sulfuric acid quantitative liquid taking device of the present invention between the return pipe, the elbow pipe and the liquid taking pipe;
fig. 3 is a structural diagram of the first fixing frame or the second fixing frame of the enclosed concentrated sulfuric acid quantitative liquid-taking device of the present invention.
Description of reference numerals:
1. a sulfuric acid storage tank; 2. a tank opening; 3. sealing cover; 4. a reaction chamber; 5. a breather pipe; 6. a first stabilizer frame; 7. an injector; 8. a liquid taking pipe; 9. bending the pipe; 10. a return pipe; 11. a transverse tube; 12. a first check valve; 13. a second one-way valve; 14. a valve; 15. glass wool; 16. a second stabilizer frame; 17. a support bar; 18. A collar; 19. a top chamber; 20. a bottom chamber.
Detailed Description
The following description of the preferred embodiments and accompanying fig. 1-3 will be made in detail with reference to the accompanying drawings of the embodiments of the present invention.
A closed concentrated sulfuric acid quantitative liquid taking device comprises a sulfuric acid storage tank 1, a drying unit and a liquid taking unit, wherein the sulfuric acid storage tank 1 is a sulfuric acid reagent bottle in the prior art, a tank opening 2 is formed in the top of the sulfuric acid storage tank 1, a sealing cover 3 is detachably connected to the tank opening 2, an external thread is arranged on the outer side wall of the tank opening 2, an internal thread is arranged on the inner side wall of the sealing cover 3, the external thread is in threaded connection with the internal thread, a protective cover used for preventing air from entering the sulfuric acid storage tank 1 is sleeved on the outer sides of the tank opening 2 and the sealing cover 3 together, the protective cover prevents reducing substances or moisture in the air from entering the sulfuric acid storage tank 1 and causing concentrated sulfuric acid to deteriorate, the sealing cover 3 is unscrewed from the sulfuric acid storage tank 1 and screwed on the next sulfuric acid storage tank 1, and a drying unit and a liquid taking unit are fixedly connected to the sealing cover 3;
the drying unit comprises a reaction chamber 4 and two vent pipes 5, the two vent pipes 5 are respectively communicated with two ends of the reaction chamber 4, the vent pipe 5 positioned at the top of the reaction chamber 4 is used for communicating air, the vent pipe 5 positioned at the bottom of the reaction chamber 4 is not only communicated with air, but also ensures that the reaction chamber 4 is fixed on the sealing cover 3 through the vent pipe 5, the reaction chamber 4 is vertically arranged above the sealing cover 3, the vent pipe 5 positioned below the reaction chamber 4 penetrates through the sealing cover 3 and extends 1-5mm inwards, the phenomenon that concentrated sulfuric acid is sucked back when the vent pipe 5 is contacted with the liquid level of the concentrated sulfuric acid in the sulfuric acid storage tank 1 is avoided and is fixedly connected with the sealing cover 3, a water absorbing layer and an adsorbing layer are sequentially arranged in the reaction chamber 4 from top to bottom, the water absorbing layer is a allochroic silica gel layer, the allochroic silica gel can absorb water, and can change color after absorbing water, when, the allochroic silica gel can be replaced, and then the water-absorbed allochroic silica gel is dried, so that the allochroic silica gel can be recycled; the adsorption layer is a porous activated carbon layer, the activated carbon has an adsorption effect, and the porous structure can enable the reductive substance in the air to be attached, so that the porous activated carbon can effectively adsorb the reductive substance in the air, and the reductive substance in the air and concentrated sulfuric acid are prevented from undergoing an oxidation-reduction reaction; the bottom of layer and adsorbed layer that absorbs water all fills up and is equipped with glass cotton 15, glass cotton 15 not only can separate off color-changing silica gel and porous active carbon, and avoided color-changing silica gel or porous active carbon to fall into in sulphuric acid storage tank 1, and glass cotton 15 can not corroded by concentrated sulfuric acid, effectively avoided the pollution to the concentrated sulfuric acid, in addition, if need change color-changing silica gel or active carbon in the reaction chamber 4, the spiro union can be dismantled together in apical chamber 19 and the basal chamber 20 of reaction chamber 4, and the position of spiro union is located the central authorities of reaction chamber 4, when color-changing silica gel or active carbon need be changed, then twist off apical chamber 19 by basal chamber 20, and change color-changing silica gel in the apical chamber 19 or the porous active carbon in the basal chamber 20 can.
The liquid taking unit comprises a syringe 7 and a liquid taking pipe 8, concentrated sulfuric acid in a sulfuric acid storage tank 1 is sucked into the syringe 7 through the liquid taking pipe 8 and quantitatively taken through scales on the syringe 7, the syringe 7 is vertically arranged above the liquid taking pipe 8, the level of the sulfuric acid liquid level is convenient and accurately taken, one end of the liquid taking pipe 8 is fixedly connected with a nipple of the syringe 7, the other end of the liquid taking pipe 8 penetrates through the sealing cover 3 and extends to the bottom of the sulfuric acid storage tank 1, the liquid taking pipe 8 extends to the bottom of the sulfuric acid storage tank 1, so that the concentrated sulfuric acid in the sulfuric acid storage tank 1 can be sucked into the syringe 7 through the liquid taking pipe 8, the waste of the concentrated sulfuric acid is avoided, the liquid taking pipe 8 is communicated with a bent pipe 9 and a return pipe 10, the bent pipe 9 is of an inverted L-shaped structure, the concentrated sulfuric acid can conveniently flow out, the return pipe 10 is, the return pipe 10 can make redundant concentrated sulfuric acid in the liquid taking pipe 8 flow into the sulfuric acid storage tank 1, two ends of the return pipe 10 are communicated with the liquid taking pipe 8, the bent pipe 9 and the horizontal pipe 11 are at the same height, so that the phenomenon that partial sulfuric acid cannot flow into the sulfuric acid storage tank 1 through the return pipe 10 due to height difference between the bent pipe 9 and the horizontal pipe 11 to cause measurement errors is avoided, the liquid taking pipe (8) is also internally provided with a first one-way valve 12, the first one-way valve 12 only can make the concentrated sulfuric acid sucked into the injector 7 from the sulfuric acid storage tank 1 and can not make the concentrated sulfuric acid in the injector 7 flow into the sulfuric acid storage tank 1, the top of the first one-way valve 12 is at the same height as the bottom of the horizontal pipe 11, so that the concentrated sulfuric acid on the first one-way valve 12 can flow into the sulfuric acid storage tank 1 through the return pipe 10, and the connecting, second check valve 13 only can make concentrated sulfuric acid outwards flow out by return bend 9, and first check valve 12 and second check valve 13 are the polyethylene check valve, and the model is: zhf, because the polyethylene does not contain oxygen, it can not be corroded by the concentrated sulfuric acid, the connection part of the horizontal tube 11 and the liquid taking tube 8 is provided with a valve 14, after the valve 14 is opened, the redundant concentrated sulfuric acid in the liquid taking tube 8 above the first one-way valve 12 flows back to the sulfuric acid storage tank 1 from the liquid taking tube 8, after the concentrated sulfuric acid flows out, the valve 14 can be closed, and the concentrated sulfuric acid in the injector 7 flows out through the second one-way valve 13 and the elbow 9.
The other ends of the vent pipe 5 and the elbow pipe 9 which are positioned above the reaction chamber 4 are respectively provided with a sealing piece for sealing, the sealing pieces are ground glass plugs, and when the ground glass plugs are plugged into the vent pipe 5 above the reaction chamber 4 or the other end of the elbow pipe 9, the ground glass plugs are rotated, so that the sealing property of the sealing pieces is better.
The outside of reaction chamber 4 is provided with and is used for stabilizing first steady rest 6 on the closing cap 3 with reaction chamber 4, first steady rest 6 includes lantern ring 18 and bracing piece 17, the outside of reaction chamber 4 is located to the lantern ring 18 cover, bracing piece 17 fixed connection with the symmetry setting on the lantern ring 18, the equal fixed connection of the other end of bracing piece 17 is on the closing cap 3, the outside of syringe 7 is provided with and is used for making the stable second steady rest 16 of liquid unit of getting, and second steady rest 16 is the same with the structure of first steady rest 6, after second steady rest 16 and first steady rest 6 stabilize drying unit and liquid unit of getting, avoided reaction chamber 4 or syringe 7 to take place to rock and cause breather pipe 5 or liquid taking pipe 8 to be broken.
When the utility model is used, after the sulfuric acid storage tank 1 is opened in a fume hood, the tank opening 2 and the sealing cover 3 are screwed together, the tank opening 2 and the sealing cover 3 are sealed by the protective cover, at the moment, if the concentrated sulfuric acid needs to be taken quantitatively, the vent pipe 5 positioned above the reaction chamber and the sealing piece on the bent pipe 9 are taken down, the injector 7 is pulled, the concentrated sulfuric acid enters the injector 7 through the liquid taking pipe 8 and is quantitatively taken through the scale on the injector 7, then the valve 14 is opened, the concentrated sulfuric acid positioned between the injector 7 and the first one-way valve 12 flows into the sulfuric acid storage tank 1 through the return pipe 10, after the concentrated sulfuric acid positioned in the injector 7 and the first one-way valve 12 flows out, the valve 14 is closed, the injector 7 is pushed, at the moment, under the action of pressure, the concentrated sulfuric acid positioned in the injector 7 flows out through the second one-way valve 13 and the bent, the purpose of quantitatively taking concentrated sulfuric acid is realized, after the closing piece is opened, because the syringe is when the pull for be in the negative pressure state in the sulfuric acid storage tank 1, the air will be inhaled to the sulfuric acid storage tank 1 this moment in, reducing substance and moisture in the air all can be adsorbed by the color-changing silica gel and the porous active carbon in the reacting chamber, thereby the concentrated sulfuric acid in the sulfuric acid storage tank 1 has been avoided rotten because of absorbing the moisture in the air or taking place chemical reaction with the reducing substance in the air.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The closed concentrated sulfuric acid quantitative liquid taking device is characterized by comprising a sulfuric acid storage tank (1), a drying unit and a liquid taking unit, wherein a tank opening (2) is formed in the top of the sulfuric acid storage tank (1), a sealing cover (3) is detachably connected to the tank opening (2), and the drying unit and the liquid taking unit are fixedly connected to the sealing cover (3);
the drying unit comprises a reaction chamber (4) and two vent pipes (5), the two vent pipes (5) are respectively communicated with two ends of the reaction chamber (4), the reaction chamber (4) is vertically arranged above the sealing cover (3), the vent pipes (5) positioned below the reaction chamber (4) penetrate through the sealing cover (3) and extend inwards for 1-5mm and are fixedly connected with the sealing cover (3), and a water absorption layer and an adsorption layer are sequentially arranged in the reaction chamber (4) from top to bottom;
the liquid taking unit comprises a syringe (7) and a liquid taking pipe (8), the syringe (7) is vertically arranged above the liquid taking pipe (8), one end of the liquid taking pipe (8) is fixedly connected with a nipple of the syringe (7), the other end of the liquid taking pipe penetrates through the sealing cover (3) and extends to the bottom of the sulfuric acid storage tank (1), the liquid taking pipe (8) is positioned on the sulfuric acid storage tank (1) and is externally communicated with a bent pipe (9) and a return pipe (10), the bent pipe (9) is of an inverted L-shaped structure, the return pipe (10) is a C-shaped pipe formed by a transverse pipe (11) and an L-shaped pipe, the return pipe (10) is arranged on the liquid taking pipe (8) along the vertical direction, two ends of the return pipe (10) are communicated with the liquid taking pipe (8), the bent pipe (9) and the transverse pipe (11) are at the same height, a first one-way valve (12) is further arranged in the liquid taking pipe (8, the top of the first one-way valve (12) and the bottom of the transverse pipe (11) are at the same height, a second one-way valve (13) is arranged at the connecting part of the bent pipe (9) and the liquid taking pipe (8), and a valve (14) is arranged at the connecting part of the transverse pipe (11) and the liquid taking pipe (8);
the other ends of the vent pipe (5) and the elbow pipe (9) which are positioned above the reaction chamber (4) are provided with closing parts for closing.
2. A closed device for quantitatively extracting concentrated sulfuric acid as claimed in claim 1, wherein the reaction chamber (4) comprises a top chamber (19) and a bottom chamber (20), the top chamber (19) and the bottom chamber (20) are identical in structure and are screwed by means of an internal thread and an external thread which are matched with each other.
3. The enclosed concentrated sulfuric acid quantitative liquid taking device as claimed in claim 1, wherein the tank opening (2) and the sealing cover (3) are jointly sleeved with a protective cover for preventing air from entering the sulfuric acid storage tank (1).
4. A closed concentrated sulfuric acid quantitative liquid taking device according to claim 1, characterized in that the outside of the reaction chamber (4) is provided with a first stabilizing frame (6) for stabilizing the reaction chamber (4) on the sealing cover (3).
5. The closed concentrated sulfuric acid quantitative liquid taking device as claimed in claim 4, wherein the first stabilizing frame (6) comprises a sleeve ring (18) and supporting rods (17), the sleeve ring (18) is sleeved on the outer side of the reaction chamber (4), the sleeve ring (18) is fixedly connected with the supporting rods (17) which are symmetrically arranged, and the other ends of the supporting rods (17) are fixedly connected to the sealing cover (3).
6. A closed concentrated sulfuric acid quantitative liquid taking device according to claim 5, characterized in that the outside of the injector (7) is provided with a second stabilizing frame (16) for stabilizing the liquid taking unit, and the second stabilizing frame (16) and the first stabilizing frame (6) have the same structure.
7. The enclosed concentrated sulfuric acid quantitative liquid-extracting device as claimed in claim 1, wherein the water-absorbing layer is a color-changing silica gel layer.
8. The enclosed concentrated sulfuric acid quantitative liquid extraction device as claimed in claim 1, wherein the adsorption layer is a porous activated carbon layer.
9. The enclosed concentrated sulfuric acid quantitative liquid taking device as claimed in claim 1, wherein the bottom of the water absorbing layer and the bottom of the adsorption layer are padded with glass wool (15).
10. The enclosed concentrated sulfuric acid quantitative liquid taking device as claimed in claim 1, wherein the outer side wall of the tank opening (2) is provided with external threads, and the inner side wall of the sealing cover (3) is provided with internal threads matched with the external threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921037927.7U CN210206902U (en) | 2019-07-04 | 2019-07-04 | Closed concentrated sulfuric acid quantitative liquid taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921037927.7U CN210206902U (en) | 2019-07-04 | 2019-07-04 | Closed concentrated sulfuric acid quantitative liquid taking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210206902U true CN210206902U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921037927.7U Active CN210206902U (en) | 2019-07-04 | 2019-07-04 | Closed concentrated sulfuric acid quantitative liquid taking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210206902U (en) |
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2019
- 2019-07-04 CN CN201921037927.7U patent/CN210206902U/en active Active
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