CN2697413Y - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN2697413Y CN2697413Y CN 200420045589 CN200420045589U CN2697413Y CN 2697413 Y CN2697413 Y CN 2697413Y CN 200420045589 CN200420045589 CN 200420045589 CN 200420045589 U CN200420045589 U CN 200420045589U CN 2697413 Y CN2697413 Y CN 2697413Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- valve
- sealing gasket
- sealing seat
- air
- 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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- Check Valves (AREA)
Abstract
The utility model discloses a check valve, comprising a sealing seat, a valve rod and a sealing gasket. One side of the valve rod is provided with a valve piece, the sealing gasket is fixed at the opening periphery of the sealing seat, and the middle of the sealing gasket is provided with a through hole which is smaller than the opening of the sealing seat. Because the check valve can make the sealing gasket be arranged at the opening periphery of the sealing seat but be not sheathed on the valve piece, the foreign matter in the air can flow into an air sac following with the air when the air is inflated, and the foreign matter can not be mixed. The phenomenon of the air leak can not be appeared; in addition, the hard valve piece can be pressed tightly on the sealing gasket in the function of the air pressure, dispensing with arranging a slope and having simple manufacturing process.
Description
Technical field
The utility model relates to a kind of one-way valve.
Background technique
One-way valve is one of component more common in the mechanical field, and it all uses in multiple occasion.The working principle of one-way valve is exactly by air pressure or hydraulic pressure gas or liquid to be flowed towards a direction, and some one-way valve also can reversely flow, but must just can make gas or liquid reverse flow this moment by external force with one-way valve opens.
As shown in Figure 1, be a kind of one-way valve that is used for gas-filled pump, it comprise sealing seat 1 ', valve rod 2 ', sealing gasket 3 ' and valve rod spring 4 ', the valve sheet 21 of sealing gasket 3 ' be placed in valve rod 2 ' inboard ' on, during use, sealing seat 1 ' be fixed on the gas-filled pump, or with this body by integral forming of gas-filled pump.When desire was inflated, ambient pressure backed down one-way valve, can inflate; After gas charges, air pressure inside compressing be placed in valve sheet 21 ' on sealing gasket 3 ', make its with sealing seat 1 ' on opening 11 ' closure; When desire is exitted,, internal gas is discharged, thereby exit as long as artificial with one-way valve opens.
Yet but there is following disappearance in above-mentioned one-way valve:
1, in general, sealing gasket 3 ' material be rubber, valve rod 2 ' then be hard material, when inflation, gas is valve rod 2 ' back down, the impurity in it often be mixed in sealing gasket 3 ' and valve sheet 21 ' between, make sealing gasket 3 ' surface of contact heave distortion, cause poorly sealed, thereby easily produce gas leak phenomenon.
2, when inflation, the easy scratch sealing surface of solid particle in the swiftly flowing air-flow, this also will cause gas leakage.
3, for make sealing gasket 3 ' with sealing seat 1 ' opening 11 ' tight close, and be unlikely to leak gas, surface of contact between the two generally is the inclined-plane, and the required precision of surface of contact is higher, has so just increased manufacture cost.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of and is difficult for being mingled with impurity and causes poorly sealed one-way valve, and its processing technology is simple.
For solving the problems of the technologies described above, technical solution of the present utility model is: a kind of one-way valve, comprise sealing seat, valve rod and sealing gasket, valve rod one side is provided with valve sheet, the sealing pad is fixed in the opening periphery of sealing seat, have through hole in the middle of it, the valve sheet of valve rod is pressed against on the sealing pad, and the surface of contact by valve sheet and sealing gasket seals.
Described sealing gasket is fixed in the opening of sealing seat by a flange; Or directly be fixed in sealing seat 1, or adopt the secondary ejaculation to be directly molded on the sealing seat by screw.
The periphery of the opening of described sealing seat offers closure gasket groove, and it is corresponding with the sealing annular groove to be provided with ring flange in the inboard of valve sheet.
After adopting such scheme, because the utility model is located at sealing gasket the opening periphery of sealing seat, and sealing surface is perpendicular to airflow direction, rather than be placed on the valve sheet, during inflation, the impurity in the gas will flow in the air bag along with gas, therefore can not be mingled with impurity on sealing surface, can be by the particle scratch of high-speed motion yet, thus can not leak air phenomenon.In addition, the valve sheet of hard will press under the effect of air pressure on sealing gasket, the inclined-plane need be set, and processing technology is simple; As the ring cambered surface flange design of fitted seal annular groove and valve sheet again, will make sealing tightr; On the other hand, its surface of contact required precision is not high, thereby can reduce manufacture cost.
Description of drawings
Fig. 1 is the structural representation of known one-way valve;
Fig. 2 is a three-dimensional exploded view of the present utility model;
Open mode schematic representation when Fig. 3 is the utility model inflation or venting;
Fig. 4 is the closed state schematic representation that the utility model is subjected to the air bag internal pressure.
Embodiment
Please as shown in Figure 2, one-way valve described in the utility model comprises sealing seat 1, valve rod 2, sealing gasket 3, valve rod spring 4 and flange 5.Wherein:
One side of valve rod 2 is provided with the valve sheet 21 that hard material is made, and it is corresponding with the closure gasket groove 12 of sealing seat 1 that the inboard of valve sheet 21 is provided with ring flange 22, and this ring flange 22 can be ring cambered surface flange.
One end of valve rod spring 4 is resisted against on the sealing seat 1, and the other end then peaks on the valve rod 2.
5 of flanges are in order to be fixed in sealing gasket 3 at opening 11 places of sealing seat 1.Certainly, also can directly sealing gasket 3 be fixed on the sealing seat 1, or adopt the secondary ejaculation directly sealing gasket 3 to be taken shape on the sealing seat 1 by screw.
As shown in Figure 3, the utility model is in inflation when (as shown by arrow B), fills valve sheet 21 to valve rod 2 from the ambient atmos of gas-filled pump, and valve rod 2 is backed down, can be to airbag aeration.When venting (as shown by arrow C), then artificially valve rod 2 is backed down, the gas in the air bag is discharged.
As shown in Figure 4, behind gassy in the air bag, gas-filled pump is no longer inflated in air bag, air bag gas inside pressure is with ejection valve sheet 21, it is pressed against on the sealing gasket 3, and because sealing gasket 3 is soft rubber material, the ring flange 22 on the valve sheet 21 will force sealing gasket 3 distortion, and make in its closure gasket groove that snaps into sealing seat 1 12, thereby make sealing tightr.
What deserves to be mentioned is that one-way valve described in the utility model not only only is used for gas-filled pump, it can be used for multiple occasion, or even medium is the occasion of liquid.And the utility model is used for the more medium fluid of impurity, and its characteristics are more outstanding.
Claims (5)
1, a kind of one-way valve comprises sealing seat, valve rod and sealing gasket, and valve rod one side is provided with valve sheet, it is characterized in that: described sealing gasket is fixed in the opening periphery of sealing seat, has through hole in the middle of it, and the valve sheet of valve rod is pressed against on the sealing pad.
2, a kind of one-way valve as claimed in claim 1 is characterized in that: described sealing gasket is fixed in the opening of sealing seat by a flange.
3, a kind of one-way valve as claimed in claim 1 is characterized in that: described sealing gasket directly by screw on sealing seat.
4, a kind of one-way valve as claimed in claim 1 is characterized in that: described sealing gasket adopts the secondary ejaculation to be directly molded on the sealing seat.
5, a kind of one-way valve as claimed in claim 1, it is characterized in that: the periphery of the opening of described sealing seat offers closure gasket groove, and it is corresponding with the sealing annular groove to be provided with ring flange in the inboard of valve sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045589 CN2697413Y (en) | 2004-04-29 | 2004-04-29 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045589 CN2697413Y (en) | 2004-04-29 | 2004-04-29 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697413Y true CN2697413Y (en) | 2005-05-04 |
Family
ID=34775685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420045589 Expired - Lifetime CN2697413Y (en) | 2004-04-29 | 2004-04-29 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697413Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107083A (en) * | 2018-08-28 | 2019-01-01 | 黄兵 | A kind of resistance health and fitness facilities |
| CN110313805A (en) * | 2018-03-28 | 2019-10-11 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking apparatus and its pressure limiting component |
| CN114427616A (en) * | 2021-12-31 | 2022-05-03 | 浙江省军工集团有限公司 | One-way air valve and inflatable castle |
-
2004
- 2004-04-29 CN CN 200420045589 patent/CN2697413Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110313805A (en) * | 2018-03-28 | 2019-10-11 | 浙江绍兴苏泊尔生活电器有限公司 | Cooking apparatus and its pressure limiting component |
| CN109107083A (en) * | 2018-08-28 | 2019-01-01 | 黄兵 | A kind of resistance health and fitness facilities |
| CN109107083B (en) * | 2018-08-28 | 2020-12-18 | 嘉兴日雅光电有限公司 | Resistance fitness equipment |
| CN114427616A (en) * | 2021-12-31 | 2022-05-03 | 浙江省军工集团有限公司 | One-way air valve and inflatable castle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140429 Granted publication date: 20050504 |