CN2060821U - Inflater being able to drawing air - Google Patents
Inflater being able to drawing air Download PDFInfo
- Publication number
- CN2060821U CN2060821U CN 89218702 CN89218702U CN2060821U CN 2060821 U CN2060821 U CN 2060821U CN 89218702 CN89218702 CN 89218702 CN 89218702 U CN89218702 U CN 89218702U CN 2060821 U CN2060821 U CN 2060821U
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- CN
- China
- Prior art keywords
- air
- top cover
- utility
- tube
- model
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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.)
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model discloses an inflator with air extraction. A sealing ring is arranged between a top cover and an operating rod to realize the movable sealing. The sealing ring can be screwed up on the top cover with screw nuts. The top cover is also led out an air-extraction tube with an air needle. The inflation of the utility model is identical with the ordinary inflator, and the screw nuts are screwed out for normal air-inflation and are screwed up for air-extraction. The utility model has the advantages of simple structure and convenient operation, and is favorable to be popularized and applied in the common families, such as the air-extraction for freshness-preservation of food, etc.
Description
The utility model relates to a kind of air extractor, particularly a kind of pump with the function of bleeding.
The air extractor that vacuumizes now to store food generally adopts vacuum pump to bleed, but various vacuum pump volumes are big, price is high, only be applicable to factory and enterprise, and for general family, need that a kind of volume is little, low price and easy to operate air extractor.
The purpose of this utility model provides a kind of pump able to drawing air simple in structure.
For achieving the above object, pump able to drawing air of the present utility model comprises cylindrical shell, the air-inflating tube that has top cover, the operating stem that has handle, and described top cover and described cylindrical shell are tightly connected, have bleeding point on the top cover, an exhaust tube is drawn from bleeding point.
Carry out motive sealing with seal ring between described top cover and the operating stem.
Be further described below in conjunction with accompanying drawing.
Fig. 1 is the longitudinal section of pump able to drawing air of the present utility model along central shaft.
As shown in Figure 1, a top cover 16 is arranged at the top of columniform cylindrical shell 7, and top cover 16 and cylindrical shell 7 are fixed seal connections.The upper end of operating stem 2 has handle 1, is convenient to the operator and uses.The hole that operating stem 2 passes top cover 16 centers enters in the cylindrical shell 7.The piston 9 that the lower end of operating stem 2 and has one-way valve 11 links to each other.Piston 9 and one-way valve 11 all are to have in the conventional manual pump.Piston 9 is divided into upper chamber 17 and lower chambers 18 to the inside of cylindrical shell 7.There is an air-inflating tube 15 to communicate with lower chambers 18 in the lower end of cylindrical shell 7 by gas cylinder 14.Gas cylinder 14 is to have in the general pump, and it makes inflates laborsavingly, but is not essential in the utility model, and air-inflating tube 15 also can directly communicate with lower chambers 18.A firmware 13 also is equipped with in the bottom, lower end of cylindrical shell 7.The time be convenient to the operator in operation and tramp with one's feet on firmware 13, make the position stability of pump and be unlikely to excessively to rock or slip.
There is an annular protrusion 19 in the central authorities of top cover 16, and its periphery has screw thread, and a nut 3 is threaded onto on the projection 19, and seal ring 4 is therebetween compressed to reach sealing effect.The plastics exhaust tube 20 that has a bleeding point 5, one softnesses that communicate with upper chamber 17 on top cover 16 is drawn from bleeding point 5, at the other end of exhaust tube 20 air tube 6 of bleeding.
When inflating, nut 3 whiz annular protrusions 19, seal ring 4 is loosened, depressurization, the working method of this moment is promptly identical with general manual pump.The purpose of loosening seal ring 4 is in order to reduce the frictional loss of seal ring 4.Even do not loosen, also can inflate, this moment, air sucked from the air tube 6 of bleeding.
When bleeding, nut 3 is tightened on the annular protrusion 19, seal ring 4 is compressed, thereby between operating stem 2 and top cover 16, form motive sealing.
The following describes pumping process.Behind fastening nut 3, air tube links with container to be bled or plastic bag and so on hermetically bleeding.Upwards lift operating stem 2, piston 9 is up, and one-way valve 11 is opened, and the air in the upper chamber 17 is through being squeezed into lower chambers 18.After piston 9 outreaches, downward again press operation bar, piston 9 is descending, and the volume of upper chamber 17 is increased, and pressure reduces, thereby the air of waiting to take out in the container is inhaled in the epicoele plug 17; This moment, one-way valve 11 was closed, and descending piston 9 enters atmosphere to the air in the lower chambers 18 by air-inflating tube 15.So circulation repeatedly makes the air of waiting to take out in the container constantly be drawn out of the effect of sending into atmosphere and reaching vacuum.
Structure of the present utility model is very simple, and is easy to use, and through overtesting, the good results are evident, and the vacuum degree of vessel that is evacuated reaches the 710mm mercury column. Be particularly suitable for the promotion and application of family's vacuum freshness retaining, and can further be generalized on the technological applications, as making sample etc.
Claims (2)
1, a kind of pump able to drawing air comprises cylindrical shell 7, the air-inflating tube 15 that has top cover 16, the operating stem 2 that has handle 1, it is characterized in that, described top cover 16 and described cylindrical shell 7 are tightly connected, having bleeding point 5, one exhaust tubes 20 on the top cover 16 draws from bleeding point 5
Carry out motive sealing with seal ring 4 between described top cover 16 and the operating stem 2.
2, pump able to drawing air as claimed in claim 1 is characterized in that, described exhaust tube 20 is soft pipes, and an end of exhaust tube 20 has the air tube 6 of bleeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89218702 CN2060821U (en) | 1989-10-28 | 1989-10-28 | Inflater being able to drawing air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89218702 CN2060821U (en) | 1989-10-28 | 1989-10-28 | Inflater being able to drawing air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2060821U true CN2060821U (en) | 1990-08-22 |
Family
ID=4873713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89218702 Withdrawn CN2060821U (en) | 1989-10-28 | 1989-10-28 | Inflater being able to drawing air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2060821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400883A (en) * | 2010-09-09 | 2012-04-04 | 杜志刚 | Deflating and inflating dual-functional air pump of front side suction type |
| CN102400882A (en) * | 2010-09-09 | 2012-04-04 | 杜志刚 | Ddeflating and inflating three-functional air pump of front side suction type |
-
1989
- 1989-10-28 CN CN 89218702 patent/CN2060821U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400883A (en) * | 2010-09-09 | 2012-04-04 | 杜志刚 | Deflating and inflating dual-functional air pump of front side suction type |
| CN102400882A (en) * | 2010-09-09 | 2012-04-04 | 杜志刚 | Ddeflating and inflating three-functional air pump of front side suction type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |