CN201448484U - Bolted bonnet and pressure self-seal valve cover tilting disc check valve - Google Patents
Bolted bonnet and pressure self-seal valve cover tilting disc check valve Download PDFInfo
- Publication number
- CN201448484U CN201448484U CN2009200472295U CN200920047229U CN201448484U CN 201448484 U CN201448484 U CN 201448484U CN 2009200472295 U CN2009200472295 U CN 2009200472295U CN 200920047229 U CN200920047229 U CN 200920047229U CN 201448484 U CN201448484 U CN 201448484U
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- CN
- China
- Prior art keywords
- valve
- valve body
- flap
- disc
- valve seat
- 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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Abstract
The utility model discloses a bolted bonnet and pressure self-seal valve cover tilting disc check valve, which comprises a valve body, a valve seat and a disc, wherein the valve seat is welded on the valve body, and the disc is hinged with a pin shaft fixedly arranged on the valve body; the sealing surface of the disc and the valve seat is of a conical surface, and the position of the pin shaft deviates from both the center of a runner and the axial center of the sealing surface; and a closed position limit lug boss and an open position limit lug boss are arranged on the valve body. The utility model has reasonable structure, moves the turning point of the ordinary swing check valve disc to an appropriate position in a sealing circle from the exterior of the sealing circle, and changes the original plane seal into the conical surface seal, accordingly, the disc is partially balanced and quickly closed, and the sealing performance can be improved.
Description
Technical field:
The utility model relates to a kind of safety check.
Background technique:
Common Swing check valve, flap is with rocking arm, center steering around bearing pin, and this is centered close to outside the circular seal face zone of flap, flap has very big impact force around outer revolving point turn-off transient, cause the additional load and the noise of pipeline, the center of gravity and the bigger gravitational resistance square of revolving point formation of flap flap and rocking arm when opening have bigger flow resistance and energy loss.
Summary of the invention:
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, little to the impact of pipeline, low noise, the bolted bonnet (BB) of low energy consumption good seal performance, pressure selfsealings valve gap inclined valve lobe safety check.
Technical solution of the present utility model is:
A kind of bolted bonnet (BB), pressure selfsealings valve gap inclined valve lobe safety check, comprise valve body, valve seat, flap, it is characterized in that: valve seat is welded on the valve body, flap and the bearing pin hinge joint that is installed on the valve body, the sealing surface of flap and valve seat is the conical surface, the runner center had both been departed from the position of described bearing pin, departed from the axial centre of sealing surface again, and closed position positive stop lug boss and enable possition positive stop lug boss are set on valve body.
A flap left side half sheet weight W 2 with apart from the product of the distance L 2 of bearing pin greater than right half sheet weight W 1 of flap and product apart from the distance L 1 of bearing pin.
The utility model is rational in infrastructure, the revolving point of common Swing check valve flap is moved to suitable position in the O-ring outside O-ring, with original plane sealing, change conical surface seal into, so both make flap reach partial equilibrium, closed rapidly, can improve sealability again.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an embodiment's of the utility model a configuration diagram.
Embodiment:
A kind of bolted bonnet (BB), pressure selfsealings valve gap inclined valve lobe safety check, comprise valve body 1, valve seat 2, flap 3, valve seat is welded on the valve body, flap and bearing pin 4 hinge joints that are installed on the valve body, the sealing surface of flap and valve seat is the conical surface, runner center (eccentric distance b1) had both been departed from the position of described bearing pin 4, departed from the axial centre (eccentric distance b2) of sealing surface again, and closed position positive stop lug boss (T1) and enable possition positive stop lug boss (T2) are set on valve body.
A flap left side half sheet weight W 2 with apart from the product of the distance L 2 of bearing pin B according to a certain percentage greater than right half sheet weight W 1 of flap and product apart from the distance L 1 of bearing pin B, so both guaranteed the relative equilibrium of the arm of force, reduce impact force, can guarantee reliable sealing again, closed position positive stop lug boss T1 on the valve body can prevent the flap that excessive power of closing and eccentric medium power moment cause and the damage of valve base sealing pair, prolonged working life, the enable possition positive stop lug boss T2 on the valve body can make such inclination flap safety check be installed on the operating mode of vertical pipe and can use normally.
Claims (2)
1. a bolted bonnet (BB), pressure selfsealings valve gap inclined valve lobe safety check, comprise valve body, valve seat, flap, it is characterized in that: valve seat is welded on the valve body, flap and the bearing pin hinge joint that is installed on the valve body, the sealing surface of flap and valve seat is the conical surface, the runner center had both been departed from the position of described bearing pin, departed from the axial centre of sealing surface again, and closed position positive stop lug boss and enable possition positive stop lug boss are set on valve body.
2. bolted bonnet (BB) according to claim 1, pressure selfsealings valve gap inclined valve lobe safety check is characterized in that: a flap left side half sheet weight W 2 with apart from the product of the distance L 2 of bearing pin greater than right half sheet weight W 1 of flap and product apart from the distance L 1 of bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200472295U CN201448484U (en) | 2009-07-13 | 2009-07-13 | Bolted bonnet and pressure self-seal valve cover tilting disc check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200472295U CN201448484U (en) | 2009-07-13 | 2009-07-13 | Bolted bonnet and pressure self-seal valve cover tilting disc check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448484U true CN201448484U (en) | 2010-05-05 |
Family
ID=42553200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200472295U Expired - Fee Related CN201448484U (en) | 2009-07-13 | 2009-07-13 | Bolted bonnet and pressure self-seal valve cover tilting disc check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742683A (en) * | 2014-01-23 | 2014-04-23 | 章华 | Oblique flap check valve with internal hinge pins |
-
2009
- 2009-07-13 CN CN2009200472295U patent/CN201448484U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742683A (en) * | 2014-01-23 | 2014-04-23 | 章华 | Oblique flap check valve with internal hinge pins |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20130713 |