CN205805862U - A kind of anti-return laboratory vacuum extractor - Google Patents
A kind of anti-return laboratory vacuum extractor Download PDFInfo
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- CN205805862U CN205805862U CN201620483814.XU CN201620483814U CN205805862U CN 205805862 U CN205805862 U CN 205805862U CN 201620483814 U CN201620483814 U CN 201620483814U CN 205805862 U CN205805862 U CN 205805862U
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- flow preventer
- pump body
- vacuum pump
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- air inlet
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Abstract
The utility model discloses a kind of anti-return laboratory vacuum extractor, it includes vacuum pump body, connector and back-flow preventer, described vacuum pump body upper part is provided with bleeding point, described connector is positioned at vacuum pump body side, back-flow preventer is connected by connector and vacuum pump body are fixing, described back-flow preventer includes air inlet and gas outlet, described air inlet is positioned at back-flow preventer side, described gas outlet is positioned at back-flow preventer top, and described gas outlet is tightly connected by flexible pipe with bleeding point.This utility model is by setting up back-flow preventer in vacuum pump body side, when lab assistant misoperation or vacuum pump body quit work suddenly, can effectively prevent the liquid in vacuum pump body from producing the phenomenon of suck-back backflow, it is to avoid sample is contaminated.This utility model simple in construction and efficient, safety.This utility model is used for laboratory equlpment evacuation.
Description
Technical field
This utility model relates to Laboratory Instruments field, particularly to a kind of anti-return laboratory vacuum extractor.
Background technology
Present laboratory usually can use simple small-sized vacuum pumping pump that such as the main equipments such as traditional vacuum concentrating instrument are carried out evacuation; but small-sized vacuum pumping pump is generally unidirectional current control; as improper in laboratory human users or vacuum pump quits work suddenly; suck-back backflow phenomenon will be produced, cause the article in main equipment to be contaminated.
Utility model content
The technical problems to be solved in the utility model is: for above-mentioned the deficiencies in the prior art, it is provided that a kind of anti-return laboratory vacuum extractor.
This utility model solves the solution of its technical problem: a kind of anti-return laboratory vacuum extractor, it includes vacuum pump body, connector and back-flow preventer, described vacuum pump body upper part is provided with bleeding point, described connector is positioned at vacuum pump body side, back-flow preventer is connected by connector and vacuum pump body are fixing, described back-flow preventer includes air inlet and gas outlet, described air inlet is positioned at back-flow preventer side, described gas outlet is positioned at back-flow preventer top, and described gas outlet is tightly connected by flexible pipe with bleeding point.
As the further improvement of technique scheme, described back-flow preventer also includes that airway, described airway are located at inside back-flow preventer, the most corresponding with described air inlet position, and described airway caliber is less than air inlet bore.Specifically, the effect of airway is to make the gas being inhaled into first pass through bottom back-flow preventer, then is drawn out of from the gas outlet on back-flow preventer top.
As the further improvement of technique scheme, curved standing shape bottom described back-flow preventer.
As the further improvement of technique scheme, described back-flow preventer also includes that seal sleeve, described seal sleeve are sheathed on air inlet.
As the further improvement of technique scheme, described connector and back-flow preventer are formed in one manufacture.
The beneficial effects of the utility model are: this utility model is by setting up back-flow preventer in vacuum pump body side, when lab assistant misoperation or vacuum pump body quit work suddenly, can effectively prevent the liquid in vacuum pump body from producing the phenomenon of suck-back backflow, it is to avoid sample is contaminated.The polycrystalline substance that back-flow preventer of the present utility model is prominent by arranging airway and arc, effectively extends air-flow flow path, arranges seal sleeve simultaneously on air inlet, make whole vacuum extractor simple in construction and efficiently, safety.This utility model is used for laboratory equlpment evacuation.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model rather than whole embodiment, and those skilled in the art is not on the premise of paying creative work, it is also possible to obtain other designs and accompanying drawing according to these accompanying drawings.
Fig. 1 is front view of the present utility model.
Detailed description of the invention
Below with reference to embodiment and accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is clearly and completely described, to be completely understood by the purpose of this utility model, feature and effect.Obviously; described embodiment is a part of embodiment of the present utility model rather than whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art is obtained on the premise of not paying creative work, belong to the scope of this utility model protection.It addition, all connection/annexations being previously mentioned in literary composition, the most singly refer to that component directly connects, and refer to couple auxiliary according to being embodied as situation by adding or reducing, form more excellent draw bail.Each technical characteristic in the invention, can be with combination of interactions on the premise of the most conflicting conflict.
With reference to Fig. 1, a kind of anti-return laboratory vacuum extractor, it includes vacuum pump body 1, connector 2 and back-flow preventer 3, described vacuum pump body 1 top is provided with bleeding point, described connector 2 is positioned at vacuum pump body 1 side, back-flow preventer 3 is connected by connector 2 is fixing with vacuum pump body 1, described back-flow preventer 3 includes air inlet 31 and gas outlet 32, described air inlet 31 is positioned at back-flow preventer 3 side, described gas outlet 32 is positioned at back-flow preventer 3 top, and described gas outlet 32 is tightly connected by flexible pipe with bleeding point.
Being further used as preferred embodiment, it is internal that described back-flow preventer also includes that airway 33, described airway 33 are located at back-flow preventer 3, the most corresponding with described air inlet 31 position, and described airway 33 caliber is less than air inlet 31 bore.Specifically, the effect of airway 33 is to make the gas being inhaled into first pass through bottom back-flow preventer 3, then is drawn out of from the gas outlet 32 on back-flow preventer 3 top.
It is further used as preferred embodiment, curved standing shape bottom described back-flow preventer 3.
Being further used as preferred embodiment, described back-flow preventer 3 also includes that seal sleeve, described seal sleeve are sheathed on air inlet 32.
Being further used as preferred embodiment, described connector 2 and back-flow preventer 3 are formed in one manufacture.
During practical operation, will treat that the escape pipe of the laboratory equlpment of evacuation is connected with the air inlet 32 of this utility model back-flow preventer and passes through seal sleeve sealed interface.
Above better embodiment of the present utility model is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement on the premise of this utility model spirit, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (5)
1. an anti-return laboratory vacuum extractor, it is characterized in that: include vacuum pump body (1), connector (2) and back-flow preventer (3), described vacuum pump body (1) top is provided with bleeding point, described connector (2) is positioned at vacuum pump body (1) side, back-flow preventer (3) is connected by connector (2) and vacuum pump body (1) are fixing, described back-flow preventer (3) includes air inlet (31) and gas outlet (32), described air inlet (31) is positioned at back-flow preventer (3) side, described gas outlet (32) is positioned at back-flow preventer (3) top, described gas outlet (32) is tightly connected by flexible pipe with bleeding point.
A kind of anti-return laboratory vacuum extractor the most according to claim 1, it is characterized in that: described back-flow preventer (3) also includes airway (33), it is internal that described airway (33) is located at back-flow preventer (3), the most corresponding with described air inlet (31) position, described airway (33) caliber is less than air inlet (31) bore.
A kind of anti-return laboratory vacuum extractor the most according to claim 1 and 2, it is characterised in that: the curved standing shape in described back-flow preventer (3) bottom.
A kind of anti-return laboratory vacuum extractor the most according to claim 1, it is characterised in that: described back-flow preventer (3) also includes that seal sleeve, described seal sleeve are sheathed on air inlet (31).
A kind of anti-return laboratory vacuum extractor the most according to claim 1, it is characterised in that: described connector (2) and back-flow preventer (3) are formed in one manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483814.XU CN205805862U (en) | 2016-05-24 | 2016-05-24 | A kind of anti-return laboratory vacuum extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620483814.XU CN205805862U (en) | 2016-05-24 | 2016-05-24 | A kind of anti-return laboratory vacuum extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805862U true CN205805862U (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620483814.XU Active CN205805862U (en) | 2016-05-24 | 2016-05-24 | A kind of anti-return laboratory vacuum extractor |
Country Status (1)
| Country | Link |
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| CN (1) | CN205805862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907340A (en) * | 2017-11-14 | 2018-04-13 | 北京卫星环境工程研究所 | Low pressure engine ignition testing equipment with tonifying Qi loop device |
-
2016
- 2016-05-24 CN CN201620483814.XU patent/CN205805862U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907340A (en) * | 2017-11-14 | 2018-04-13 | 北京卫星环境工程研究所 | Low pressure engine ignition testing equipment with tonifying Qi loop device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |