CN201344290Y - All plastic wafer check valve - Google Patents
All plastic wafer check valve Download PDFInfo
- Publication number
- CN201344290Y CN201344290Y CNU2008201709208U CN200820170920U CN201344290Y CN 201344290 Y CN201344290 Y CN 201344290Y CN U2008201709208 U CNU2008201709208 U CN U2008201709208U CN 200820170920 U CN200820170920 U CN 200820170920U CN 201344290 Y CN201344290 Y CN 201344290Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve plate
- working surface
- valve
- check valve
- 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 - Fee Related
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- Check Valves (AREA)
Abstract
The utility model relates to a check valve, in particular to an all plastic wafer check valve. The wafer check valve comprises a valve body and a valve plate; the valve plate is hinged on the valve body; and a seal ring is arranged on the working face of the valve plate. The wafer check valve is characterized in that the axial line of the articulated shaft of the valve plate and the working face of the valve body are positioned on the same plane. As the working face and the axial line of the articulated shaft are on the same plane, the seal ring of the valve body has uniform stress towards the working face of the valve body, and the seal effect is good.
Description
Technical field
The utility model relates to a kind of safety check, and is particularly a kind of overall plastic to the folder safety check.
Background technique
Wafer Check Valves is because it is simple in structure, material is saved, therefore be used widely, as China Patent No. is 91224880.7, notice of authorization day is that 1992 05 year 13 purposes are typically a kind of to the folder safety check, by in the patent document of this bulletin as can be known, the working surface of the valve plate of this safety check (right flank) is the plane, working surface is provided with seal ring, valve plate is hinged on the valve body by hinging shaft, and the axle center of this hinging shaft is positioned at the left side of valve plate, between the extended surface on right plane, and this will produce a problem: valve plate is not under himself gravity and when being in closed state when there being pressure medium, the face in its left side is owing to be positioned at the right side of hinging shaft, therefore the left surface of valve plate is less to the pressure of the working surface of valve body, thereby influence sealability, the working surface of valve plate deviates from the axle center of hinging shaft in addition, also make seal ring on the working surface on, following both sides are inconsistent to the pressure of the working surface of valve body, thereby easily for leakage.
The model utility content
The purpose of this utility model provides a kind of sealing effect better overall plastic to the folder safety check.
The purpose of this utility model is achieved by the following technical solution: a kind of overall plastic to the folder safety check, include valve body and valve plate, described valve plate is hinged on the valve body, the working surface of described valve plate is provided with seal ring, is characterized in: the axis of the hinging shaft of described valve plate and the working surface of valve body are in same plane.
Further, also be provided with a cylinder boss on the working surface of valve plate, the diameter of this boss is less than the passage bore of valve body.
The beneficial effects of the utility model are: because the axis of the working surface of valve body and hinging shaft is in the same plane, so the seal ring of valve body is even to the pressure of the working surface of valve body, good sealing effect.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation
Fig. 2 is the A-A sectional view of Fig. 1
Embodiment
Now in conjunction with the accompanying drawings mode of execution of the present utility model is further described:
As shown in Figure 1 and Figure 2, a kind of overall plastic embodiment of the utility model to the folder safety check, include valve body 1 and valve plate 2, described valve plate 2 is hinged on the valve body 1, the working surface 21 of described valve plate 2 is provided with seal ring 3, the axis of the hinging shaft 23 of described valve plate 2 and the working surface 11 of valve body 1 are in same plane, also are provided with a cylinder boss 22 on the working surface 21 of valve plate 2, and the diameter of this boss 22 is less than the passage bore 12 of valve body.
From the mechanics angle analysis, the line stretcher of the working surface of valve plate is far away more from the axle center in hinging shaft, its pressure to the working surface of valve body is more little, thereby sealability can be poor more, and the left side in the offside axle center in hinging shaft of the line stretcher of the working surface of valve plate, then its pressure to the working surface of valve body obviously can be big more, but if the working surface of valve plate then can make again away from the left side in the axle center of hinging shaft valve plate working surface on, the lower end produces pressure difference to the pressure of the working surface of valve body, thereby can make the upper end pressurized fully of seal ring of valve plate, and the lower end of seal ring also fails effectively to seal, leak thereby produce, therefore if from the seal ring of valve plate sealing effect for the working surface of valve body, when valve plate is in the heavily following time of hanging down, when the axle center of this hinging shaft and the working surface of valve body were in the same vertical plane, the seal ring of valve plate was the most even to the pressure of the working surface of valve body.The utility model is in the same plane just because of the axis of the working surface of valve body and hinging shaft, therefore the seal ring of valve body on, following both sides are consistent to the face pressure of valve body, therefore sealing evenly, effective, and owing to also be provided with boss, thereby increased the quality with respect to the right side of hinging shaft of valve plate, so promptly improved the pressure of the working surface of valve plate to the working surface of valve body, further improved sealing effect, this is particularly for the safety check of plastics, the counterweight that this boss rose is even more important, because it is low weight for plastic materials, if there is not the counterweight of this boss, can make valve plate less, thereby influence sealability easily the pressure of the working surface of valve body.
Claims (2)
- One kind overall plastic to the folder safety check, include valve body and valve plate, described valve plate is hinged on the valve body, the working surface of described valve plate is provided with seal ring, it is characterized in that: the axis of the hinging shaft of described valve plate and the working surface of valve body are in same plane.
- 2. according to claim 1 overall plastic to the folder safety check, it is characterized in that: also be provided with a cylinder boss on the working surface of valve plate, the diameter of this boss is less than the passage bore of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201709208U CN201344290Y (en) | 2008-12-24 | 2008-12-24 | All plastic wafer check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201709208U CN201344290Y (en) | 2008-12-24 | 2008-12-24 | All plastic wafer check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344290Y true CN201344290Y (en) | 2009-11-11 |
Family
ID=41275871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201709208U Expired - Fee Related CN201344290Y (en) | 2008-12-24 | 2008-12-24 | All plastic wafer check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201344290Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382396A (en) * | 2016-12-06 | 2017-02-08 | 无锡优耐特净化装备有限公司 | Soft sealing check valve |
| CN109248391A (en) * | 2018-10-09 | 2019-01-22 | 中国民用航空总局第二研究所 | A kind of helicopter fire extinguishing well-bucket automatic water-drawing device |
-
2008
- 2008-12-24 CN CNU2008201709208U patent/CN201344290Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382396A (en) * | 2016-12-06 | 2017-02-08 | 无锡优耐特净化装备有限公司 | Soft sealing check valve |
| CN109248391A (en) * | 2018-10-09 | 2019-01-22 | 中国民用航空总局第二研究所 | A kind of helicopter fire extinguishing well-bucket automatic water-drawing device |
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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 |
Granted publication date: 20091111 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |