CN204241441U - Accurate titration apparatus - Google Patents
Accurate titration apparatus Download PDFInfo
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- CN204241441U CN204241441U CN201420608876.XU CN201420608876U CN204241441U CN 204241441 U CN204241441 U CN 204241441U CN 201420608876 U CN201420608876 U CN 201420608876U CN 204241441 U CN204241441 U CN 204241441U
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- buret
- liquid
- conical flask
- titration apparatus
- woven hose
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Abstract
The utility model relates to chemistry titration apparatus field, especially a kind of accurately titration apparatus, and it comprises buret, conical flask, and conical flask is positioned at immediately below buret, is provided with flow solenoid valve in the lower end of buret; This accurate titration apparatus, by the infusion volume of flow solenoid valve liquid with precise control, improves dropping liquid precision, avoids the situation that terminal occurred; Utilize pressure to be delivered in buret by liquid by woven hose, adding of liquid is more simple, and stable, addition is controlled simultaneously; And the setting of holder and active and passive magnet rotor, avoid manually rocking conical flask, reduce labour intensity, and can mixing evenness be improved.
Description
Technical field
The utility model relates to chemistry titration apparatus field, especially a kind of accurately titration apparatus.
Background technology
Existing buret is all control dropping liquid amount manually, and control accuracy is low, often occurs the situations such as terminal, and the liquid of instillation too much affects normal analysis result.Especially when the mensuration that hydroxyl value of polyester polyol measures, because the sample that need measure is all turbid solution, higher to the uniformity requirement of liquid, in titration process, conical flask needs ceaselessly to carry out craft and rocks, thus causes the workload of operation large; In addition for when adding standard solution in buret, be adopt the method poured into, the amount poured into is difficult to control, and often too much exceeds zero graduation line, shines into standard solution waste, and, the storage life of toppling over and can reduce standard solution of often uncapping.
Utility model content
The purpose of this utility model is deficiency in order to solve above-mentioned technology and provides a kind of structure simple, and dropping liquid amount can carry out the accurate titration apparatus accurately controlled.
In order to achieve the above object, the accurate titration apparatus designed by the utility model, it comprises buret, conical flask, and conical flask is positioned at immediately below buret, is provided with flow solenoid valve in the lower end of buret.
Technique scheme, flow solenoid valve is adopted to replace existing manually operated control valve, by the setting of flow solenoid valve, achieve and the dropping liquid amount of buret is accurately controlled, and change dropping liquid amount according to the different titration periods, to realize accurate dropping liquid, avoid the situation occurring to cause titration overstep of end point because dropping liquid amount controls inequality, improve the usability of titration apparatus.
As optimization, described flow solenoid valve has four to control shelves, is respectively and closes shelves, top gear, mid ranger, low or first gear; Dropping liquid, top gear are per second 20 drop of liquid, mid ranger is per second 5 drop of liquid, low or first gear is per second 1 drop of liquid in order to stop wherein closing shelves.This structure is arranged accurately, at the initial stage of titration, can adopt height shelves dropping liquid, realize quick dropping liquid, in the mid-term of dropping liquid, adopt mid ranger dropping liquid, avoid causing because dropping liquid amount is excessive the situation crossing terminal instantaneously; In the latter stage of dropping liquid, then adopt low or first gear dropping liquid, instillation do not have drop of liquid all within the control reaction time of operating personnel, the amount of instillation can be controlled to each accurately, and each amount of dripping is 0.03ml, infusion volume is then very accurate.
As optimization, be provided with liquid reserve tank at the side of buret, liquid reserve tank is enclosed construction, is provided with woven hose in liquid reserve tank inside, and woven hose is connected with buret through after liquid reserve tank, and buret and woven hose junction are provided with the pressure balance mouth be in communication with the outside; Liquid reserve tank is connected with inflating balloon by tracheae.The setting of this structure, avoid situation liquid being poured into buret, only liquid need be placed in liquid reserve tank, then extrude inflating balloon, pressurize in liquid reserve tank, pressure is utilized to be depressed in buret by liquid, also process of press in is controlled, thus it is relatively accurate that the addition of liquid can be made to control, and controlled at zero graduation line place easily, improve the efficiency of liquid feeding, but also can avoid because adding excessive or spilling and cause the waste of liquid.
Described woven hose and buret junction, the madial wall of woven hose and buret is fitted.This structure can at woven hose in buret during infusion fluid, and liquid can flow along buret inwall, avoids liquid directly drip and cause the situation of splashing.
Conical flask below described buret is arranged on holder, motor is provided with in the inside of holder, motor and the active magnetic rotor be arranged in holder are in transmission connection, active magnetic rotor is horizontally disposed with, in conical flask, be provided with passive magnet rotor, passive magnet rotor aligns with active magnetic rotor; Passive magnet rotor is provided with stirring vane.The setting of this structure, utilizes coordinating of active magnetic rotor and passive magnet rotor, realizing the stirring of inner conical bottle internal liquid, manually rocking conical flask without the need to adopting, and reduces workload; And do not contact inside and outside conical flask, can not pollute internal liquid, and only need be placed on holder by conical flask when using, simple to operation, usability is superior.
The accurate titration apparatus that the utility model obtains, by the infusion volume of flow solenoid valve liquid with precise control, improves dropping liquid precision, avoids the situation that terminal occurred; Utilize pressure to be delivered in buret by liquid by woven hose, adding of liquid is more simple, and stable, addition is controlled simultaneously; And the setting of holder and active and passive magnet rotor, avoid manually rocking conical flask, reduce labour intensity, and can mixing evenness be improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1, the accurate titration apparatus that the present embodiment describes, it comprises buret 1, conical flask 3, and conical flask 3 is positioned at immediately below buret 1, is provided with flow solenoid valve 2 in the lower end of buret 1; Described flow solenoid valve 2 has four to control shelves, is respectively and closes shelves, top gear, mid ranger, low or first gear; Dropping liquid, top gear are per second 20 drop of liquid, mid ranger is per second 5 drop of liquid, low or first gear is per second 1 drop of liquid in order to stop wherein closing shelves.
Be provided with liquid reserve tank 4 at the side of buret 1, liquid reserve tank 4 is enclosed construction, is provided with woven hose 5 in liquid reserve tank 4 inside, and woven hose 5 is connected with buret 1 through after liquid reserve tank 4, and buret 1 and woven hose 5 junction are provided with the pressure balance mouth 8 be in communication with the outside; Liquid reserve tank 4 is connected with inflating balloon 6 by tracheae 7; Described woven hose 5 and buret 1 junction, woven hose 5 is fitted with the madial wall of buret 1.
Conical flask 3 below described buret 1 is arranged on holder 9, motor 10 is provided with in the inside of holder 9, motor 10 and the active magnetic rotor 11 be arranged in holder 9 are in transmission connection, active magnetic rotor 11 is horizontally disposed with, in conical flask 3, be provided with passive magnet rotor 12, passive magnet rotor 12 aligns with active magnetic rotor 11; Passive magnet rotor 12 is provided with stirring vane 13.
Claims (4)
1. an accurate titration apparatus, it comprises buret, conical flask, and conical flask is positioned at immediately below buret, it is characterized in that: be provided with flow solenoid valve in the lower end of buret; Be provided with liquid reserve tank at the side of buret, liquid reserve tank is enclosed construction, is provided with woven hose in liquid reserve tank inside, and woven hose is connected with buret through after liquid reserve tank, and buret and woven hose junction are provided with the pressure balance mouth be in communication with the outside; Liquid reserve tank is connected with inflating balloon by tracheae.
2. the accurate titration apparatus of one according to claim 1, is characterized in that: described flow solenoid valve has four to control shelves, is respectively and closes shelves, top gear, mid ranger, low or first gear; Dropping liquid, top gear are per second 20 drop of liquid, mid ranger is per second 5 drop of liquid, low or first gear is per second 1 drop of liquid in order to stop wherein closing shelves.
3. the accurate titration apparatus of one according to claim 1, is characterized in that: described woven hose and buret junction, and the madial wall of woven hose and buret is fitted.
4. the accurate titration apparatus of one according to claim 1, it is characterized in that: the conical flask below described buret is arranged on holder, motor is provided with in the inside of holder, motor and the active magnetic rotor be arranged in holder are in transmission connection, active magnetic rotor is horizontally disposed with, in conical flask, be provided with passive magnet rotor, passive magnet rotor aligns with active magnetic rotor; Passive magnet rotor is provided with stirring vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608876.XU CN204241441U (en) | 2014-10-21 | 2014-10-21 | Accurate titration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608876.XU CN204241441U (en) | 2014-10-21 | 2014-10-21 | Accurate titration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241441U true CN204241441U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420608876.XU Active CN204241441U (en) | 2014-10-21 | 2014-10-21 | Accurate titration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405011A (en) * | 2018-03-06 | 2018-08-17 | 于越 | multifunctional biological experiment platform |
-
2014
- 2014-10-21 CN CN201420608876.XU patent/CN204241441U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405011A (en) * | 2018-03-06 | 2018-08-17 | 于越 | multifunctional biological experiment platform |
| CN108405011B (en) * | 2018-03-06 | 2021-01-15 | 广东中智源实验室装备制造有限公司 | Multifunctional biological experiment table |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |