CN202902827U - Suck-back prevention device for vacuum drying device - Google Patents
Suck-back prevention device for vacuum drying device Download PDFInfo
- Publication number
- CN202902827U CN202902827U CN 201220601008 CN201220601008U CN202902827U CN 202902827 U CN202902827 U CN 202902827U CN 201220601008 CN201220601008 CN 201220601008 CN 201220601008 U CN201220601008 U CN 201220601008U CN 202902827 U CN202902827 U CN 202902827U
- Authority
- CN
- China
- Prior art keywords
- suck
- glass tube
- vacuum drying
- drying chamber
- back device
- Prior art date
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a suck-back prevention device for a vacuum drying device. The suck-back prevention device comprises a three-necked flask with an open upper end, a polytetrafluoroethylene tube, a first glass tube and a second glass tube, wherein a bottleneck of the three-necked flask is plugged by a matched rubber plug; two through holes which are vertically perforative are formed in the rubber plug; one end of the first glass tube is inserted into a position 1 to 5cm below the bottleneck of the three-necked flask through one of the through holes; the other end of the first glass tube is connected with one end of the polytetrafluoroethylene tube through a connection part; and the second glass tube is inserted into the bottom of the three-necked flask through the other through hole. The suck-back prevention device is simple in structure and convenient to use, a phenomenon that a sample absorbs moisture is avoided, and the detection accuracy is improved.
Description
Technical field
The utility model relates to a kind of suck-back device, is specifically related to a kind of suck-back device for vacuum drying chamber.
Background technology
In the sample detection of chemical and medicine industry check, vacuum drying chamber is taken out by the mode that moisture in the sample is vacuumized, and after the earth pressure release within the drying box, airborne moisture can enter in the vacuum drying chamber by suck-back at that time, cause the hygroscopic effect of sample, thereby affect the detection effect of sample.
The utility model content
The utility model purpose: the purpose of this utility model is in order to remedy the deficiencies in the prior art, a kind of suck-back device for vacuum drying chamber to be provided.
Technical scheme: a kind of suck-back device for vacuum drying chamber, described suck-back device comprises the uncovered conical flask in upper end, polytetrafluoro pipe, the first glass tube, the second glass tube, described conical flask bottle mouth position is plugged with suitable rubber stopper, described rubber stopper is provided with two through holes of up/down perforation, described the first glass tube one end inserts conical flask bottleneck below 1-5 centimeters by through hole, the other end connects an end of polytetrafluoro pipe by attaching parts, described the second glass tube inserts the conical flask bottom by another through hole.
As preferably, a kind of suck-back device for vacuum drying chamber, described the first glass tube and the second diameter glass tube are 1 centimetre, and length is 18-20 centimetre.
As preferably, a kind of suck-back device for vacuum drying chamber, described attaching parts are rubber tube or tube connector.
As preferably, a kind of suck-back device for vacuum drying chamber, the other end of described polytetrafluoro pipe is used for connecting the exhaust outlet of vacuum drying chamber.
Beneficial effect: the utility model has adopted after such structure, can prevent the moisture suck-back and the hygroscopic effect that causes, and the utility model is simple in structure, and is easy to use.
Description of drawings
Accompanying drawing is structural representation of the present utility model.
The specific embodiment
A kind of suck-back device for vacuum drying chamber, suck-back device comprises the uncovered conical flask in upper end, polytetrafluoro pipe 2, the first glass tube 31, the second glass tube 32, the conical flask bottle mouth position is plugged with suitable rubber stopper 4, described rubber stopper 4 is provided with two through holes of up/down perforation, the first glass tube 31 1 ends insert conical flask 1 bottleneck below 1-5 centimeters by through hole, the other end connects an end of polytetrafluoro pipe 2 by attaching parts, the second glass tube 32 inserts the conical flask bottom by another through hole.The first glass tube 31 and the second glass tube 32 diameters are 1 centimetre, and length is 18-20 centimetre.In the utility model, attaching parts are rubber tube or tube connector, and the other end of polytetrafluoro pipe 2 is used for connecting the exhaust outlet of vacuum drying chamber.
Claims (4)
1. suck-back device that is used for vacuum drying chamber, it is characterized in that: described suck-back device comprises the conical flask (1) that the upper end is uncovered, a polytetrafluoro pipe (2), the first glass tube (31), the second glass tube (32), described conical flask bottle mouth position is plugged with suitable rubber stopper (4), described rubber stopper (4) is provided with two through holes of up/down perforation, described the first glass tube (31) one ends insert conical flask (1) bottleneck below 1-5 centimeters by through hole, the other end connects an end of polytetrafluoro pipe (2) by attaching parts, described the second glass tube (32) inserts the conical flask bottom by another through hole.
2. the suck-back device for vacuum drying chamber as claimed in claim 1, it is characterized in that: described the first glass tube (31) and the second glass tube (32) diameter are 1 centimetre, and length is 18-20 centimetre.
3. the suck-back device for vacuum drying chamber as claimed in claim 1, it is characterized in that: described attaching parts are rubber tube or tube connector.
4. the suck-back device for vacuum drying chamber as claimed in claim 1 or 2 is characterized in that: the other end of described polytetrafluoro pipe (2) is used for connecting the exhaust outlet of vacuum drying chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601008 CN202902827U (en) | 2012-11-14 | 2012-11-14 | Suck-back prevention device for vacuum drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601008 CN202902827U (en) | 2012-11-14 | 2012-11-14 | Suck-back prevention device for vacuum drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202902827U true CN202902827U (en) | 2013-04-24 |
Family
ID=48123487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220601008 Expired - Lifetime CN202902827U (en) | 2012-11-14 | 2012-11-14 | Suck-back prevention device for vacuum drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202902827U (en) |
-
2012
- 2012-11-14 CN CN 201220601008 patent/CN202902827U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |