CN86201412U - Quantitative liquid-feeding utensile by means of pressure - Google Patents
Quantitative liquid-feeding utensile by means of pressure Download PDFInfo
- Publication number
- CN86201412U CN86201412U CN 86201412 CN86201412U CN86201412U CN 86201412 U CN86201412 U CN 86201412U CN 86201412 CN86201412 CN 86201412 CN 86201412 U CN86201412 U CN 86201412U CN 86201412 U CN86201412 U CN 86201412U
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- CN
- China
- Prior art keywords
- liquid
- utility
- model
- feeding
- pressure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Abstract
The utility model provides a quantitative liquid-feeding device by means of pressure, which is characterized in that the needle tube of the injector of working parts and other components do not suck in liquid; the lower side of the quantitative liquid-feeding device is provided with a glass tube with a positive and a negative single-phase pistons. The utility model transfers through compressed-air, presses outside air in a bottle and forces a solution in a container to be exhausted from an output duct. The feeding method has the advantages that firstly, the working parts which do not suck in the liquid do not generate a plugging phenomenon; secondly, the positive and the negative single-phase pistons are not in the liquid; thus, even if the solution has granules, the clogging and malfunction can not occur; finally, the utility model is particularly suitable for acid, alkali and saline solutions with high concentrations.
Description
The utility model belongs to fluid distribution technique field, is specially adapted to various laboratories quantitative liquid feeding and uses.
Each scientific research at present, hospital, biochemical measurement is made in the various laboratories of factory, when analyzing, trace chemical elements uses various chemical reagent, biologic product and some aqua medicines etc. carry out the continuous and quantitative liquid feeding, generally adopt and on glass cap, add a fixture, this device has the syringe needle tube of all size, in succession below and have the grass tube of positive and negative two single-phase pistons, metal and nonmetallic quantitative regulation apparatus, the charger of producing as Haining glass apparatus factory is this kind just, its shortcoming is that the syringe and the single-phase piston of workpiece carries out liquid feeding in solution, inevitably produce: (1) workpiece all directly immerses in the solution, because reagent evaporation, remaining residue makes syringe produce the embolism phenomenon; (2) positive and negative two single-phase glass pistons are immersed in the solution, exist if any particle, and the malfunctioning phenomenon of liquid feeding takes place to block to cause liquid feeding inaccurate; (3) inapplicable to the acid-base salt solution of high concentration.
For solving above deficiency, the utility model provides a kind of special construction that adopts compressed air to transmit to realize quantitative liquid feeding.
For realizing this programme, this installs by a syringe needle tube (1), the threeway grass tube (4) of ining succession below and having positive and negative two single-phase pistons, and metering control (2), bottle stopper (3), several parts of drain pipe (5) and container (6) are formed.The course of work is as follows: at first will be poured in the container by liquid feeding, bottle stopper jam-pack together with the band workpiece, must not leak gas, when syringe piston is transferred to, control to assigned address by metering control by quantitative scale by liquid feeding quantity, at this moment outside air is because negative pressure, just enter by the threeway glass tube is suitable for reading, enter in the empty tube of syringe (piston is closed above this moment) by a following single-phase piston, be pressed into syringe piston then, cavity (piston is closed below this moment) above air just enters in the bottle by the empty tube of syringe by a top single-phase piston, pressure of the inside of a bottle strengthens, and forces liquid to be discharged from drain pipe (5), the volume of discharging liquid equals to be pressed into the volume (Bo-Ma law) of air, so the liquid feeding that can move in circles, acidic materials adopt the glass ground joint lid, and alkaline matter adopts serum cap.
It is fast that this device has solved the deficiency and the liquid feeding of above-mentioned three aspects fully, accurately, good reproducibility, easy to operate.
Fig. 1 is the utility model sectional drawing (wherein container can be vial, plastic bottle or other container etc.).
Claims (1)
- A kind of air pressure quantitative charger, it is made up of container, bottle stopper, syringe needle tube and grass tube, and the utility model is characterised in that by connecting the threeway grass tube (4) that syringe has two single-phase pistons, metering control (2).Separate fully with other parts, its lower end is stretched in the liquid, above the reclinate slightly drain pipe of flat part (5) form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86201412 CN86201412U (en) | 1986-03-13 | 1986-03-13 | Quantitative liquid-feeding utensile by means of pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86201412 CN86201412U (en) | 1986-03-13 | 1986-03-13 | Quantitative liquid-feeding utensile by means of pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86201412U true CN86201412U (en) | 1987-03-25 |
Family
ID=4805175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86201412 Ceased CN86201412U (en) | 1986-03-13 | 1986-03-13 | Quantitative liquid-feeding utensile by means of pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86201412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624257A (en) * | 2013-11-12 | 2015-05-20 | 胡自胜 | Ultrapure water automatic constant volume all-in-one machine |
-
1986
- 1986-03-13 CN CN 86201412 patent/CN86201412U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624257A (en) * | 2013-11-12 | 2015-05-20 | 胡自胜 | Ultrapure water automatic constant volume all-in-one machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right |