CN204642528U - A kind of stable-pressure device of vacuum fresh-keeping bag - Google Patents
A kind of stable-pressure device of vacuum fresh-keeping bag Download PDFInfo
- Publication number
- CN204642528U CN204642528U CN201520124316.1U CN201520124316U CN204642528U CN 204642528 U CN204642528 U CN 204642528U CN 201520124316 U CN201520124316 U CN 201520124316U CN 204642528 U CN204642528 U CN 204642528U
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- lower casing
- stable
- casing
- upper casing
- seal
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Abstract
The utility model discloses a kind of stable-pressure device of vacuum fresh-keeping bag, comprise upper casing, seal strip and lower casing, through hole is had in the middle part of lower casing, seal strip is arranged on above through hole, upper casing and lower casing are threaded connection and make seal strip compress lower casing to seal through hole, and are provided with seal ring between upper casing and lower casing.The utility model is threaded connection, and make the sealing property between upper casing and lower casing better, what can keep freshness protection package for a long time vacuumizes state, and seal ring can strengthen sealing property further, makes the vacuum holding time of article more of a specified duration.
Description
Technical field
The utility model relates to a kind of sealing arrangement, particularly relates to a kind of sealing stable-pressure device of vacuum fresh-keeping bag.
Background technology
The vacuum bag of current commercial type, method mostly by vacuumizing is come fresh-keeping, common vacuum voltage regulation device has and upper and lower cover clamping to be sealed or directly on freshness protection package, to install unidirectional extraction valve etc., but all there is a problem: there is certain gap junction, can leak gas, thus sealing effectiveness is not lasting, food or other article cannot be fresh-keeping for a long time, also other is had to make the device of freshness protection package vacuum voltage regulation on the market, as utilized the mode of upper and lower cover rigid fit, though but this kind of mode sealing effectiveness has lifting compared with the former, use inconvenient.
Summary of the invention
The purpose of this utility model be to provide a kind of can permanent seal fresh-keeping and structure simple, vacuum fresh-keeping bag stable-pressure device easy to use.
A kind of vacuum fresh-keeping bag stable-pressure device described in the utility model, comprise upper casing, lower casing and seal ring, seal strip is arranged between upper casing and lower casing, and upper casing and lower casing are threaded connection press seal sheet.
Also be provided with seal ring between upper casing and lower casing, seal the gap that may exist after upper casing is connected with lower casing, make the sealing property of device better.Preferably, seal ring adopts O-ring seals.
Seal strip is the thin slice of low durometer stock, and be provided with opening in the middle of seal strip, when bleeding, air pressure can make opening open, and makes air can discharge vacuum bag smoothly, and after exhausting air, seal strip is protruding, and extraneous air cannot enter in vacuum bag again.
After having bled, by rotating upper casing, with being screwed of lower casing, pushing down seal strip, having made it keep vacuumizing state, thus having made the air pressure of freshness protection package sustained.
The utility model is by the press seal sheet that is threaded with lower cover by upper cover, and favorable sealing property, what can keep vacuum bag for a long time vacuumizes state.Seal ring can strengthen sealing property further, makes vacuum state keep more of a specified duration.
Adopt the thin slice of low durometer stock as seal strip, the damage of seal strip can be reduced, and energy repeated usage repeatedly.
This apparatus structure is simple, easy to use and cost is lower, can be mass for vacuum fresh-keeping bag.
Accompanying drawing explanation
Fig. 1 is the structural representation of the stable-pressure device of the utility model vacuum fresh-keeping bag.
Fig. 2 is the structural blast schematic diagram of the stable-pressure device of the utility model vacuum fresh-keeping bag.
Detailed description of the invention
As shown in Figure 1, a kind of stable-pressure device of vacuum fresh-keeping bag comprises upper casing 10, seal strip 20 and lower casing 30, and seal strip 20 is arranged between upper casing 10 and lower casing 30.
The sidewall of upper casing 10 is provided with negative thread, is also provided with an annular lip 11 in the middle part of upper casing 10, arrange a circle cone tank 111 between flange 11 and sidewall, the lateral wall of flange 11 is provided with a step 112, and the top of flange 11 arranges a compressing structure 113.
Sidewall 31 periphery of lower casing 30 is provided with outside thread, match with the negative thread 11 of upper casing 10, sidewall 31 top arranges a tapered protrusion 311, match with the conical tank 111 of upper casing 10, sidewall 31 inner ring arranges a step 312, coordinate formation one space with the step 112 of upper casing 10, be provided with an O-ring seals 40 in this space, the space between two side is sealed.Also have a through hole 32 bottom lower casing, communicate with freshness protection package cavity, air is discharged from through hole 32.
Seal strip 20 is the thin slice of a silica gel material, and centre offers an opening 21, and seal strip 20 is arranged on above through hole 32.
When vacuum fresh-keeping bag need vacuumize, opening 21 is washed open by air pressure, and air flows to opening from through hole and is discharged, after air is discharged, seal strip 20 upwardly, first O-ring seals 40 is placed on the step place of the sidewall 31 of lower casing 30, be then screwed on lower casing 30 by upper casing 10, negative thread matches with outside thread, seal strip 30 and lower casing 10 can compress by compressing structure 113, seal through hole 32, O-ring seals 40 is in step 112 and coordinates with step 312 in the space that formed, is lived by the gap seals between two side.Tapered protrusion 311 matches with cone tank 111, the leak tightness that enhancing upper casing 10 is connected with lower casing 30 and steadiness.
Being threaded connection can by upper casing 10 and lower casing 30 firmly and removably link together, and its sealing property is better, and the state that can freshness protection package be kept for a long time to vacuumize, makes article preserve for a long time.And increase seal ring further, more can improve the sealing property of this device, make the state that vacuumizes keep more of a specified duration.Solve vacuum fresh-keeping bag in the market because sealing is tight or seal strip breaks and produces gas leakage, make the problem that the article holding time is not grown.This apparatus structure is simple, easy to use and cost is lower, can be mass for vacuum fresh-keeping bag.
Claims (5)
1. a stable-pressure device for vacuum fresh-keeping bag, comprises upper casing, seal strip and lower casing, and seal strip is arranged between upper casing and lower casing, it is characterized in that: upper casing and lower casing are threaded connection press seal sheet.
2. the stable-pressure device of vacuum fresh-keeping bag according to claim 1, is characterized in that: be also provided with seal ring between described upper casing and lower casing.
3. the stable-pressure device of vacuum fresh-keeping bag according to claim 2, is characterized in that: described seal ring is O-ring seals.
4. the stable-pressure device of vacuum fresh-keeping bag according to claim 1, is characterized in that: described seal strip is the thin slice of low durometer stock.
5. the stable-pressure device of vacuum fresh-keeping bag according to claim 4, is characterized in that: described seal strip is provided with an opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124316.1U CN204642528U (en) | 2015-03-04 | 2015-03-04 | A kind of stable-pressure device of vacuum fresh-keeping bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520124316.1U CN204642528U (en) | 2015-03-04 | 2015-03-04 | A kind of stable-pressure device of vacuum fresh-keeping bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204642528U true CN204642528U (en) | 2015-09-16 |
Family
ID=54095297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520124316.1U Expired - Fee Related CN204642528U (en) | 2015-03-04 | 2015-03-04 | A kind of stable-pressure device of vacuum fresh-keeping bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204642528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399519A (en) * | 2017-09-01 | 2017-11-28 | 安顺职业技术学院 | A kind of ensiling polybag of vacuum-pumping |
-
2015
- 2015-03-04 CN CN201520124316.1U patent/CN204642528U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399519A (en) * | 2017-09-01 | 2017-11-28 | 安顺职业技术学院 | A kind of ensiling polybag of vacuum-pumping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160304 |