CN203202310U - Built-in type check valve - Google Patents
Built-in type check valve Download PDFInfo
- Publication number
- CN203202310U CN203202310U CN 201320204699 CN201320204699U CN203202310U CN 203202310 U CN203202310 U CN 203202310U CN 201320204699 CN201320204699 CN 201320204699 CN 201320204699 U CN201320204699 U CN 201320204699U CN 203202310 U CN203202310 U CN 203202310U
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- CN
- China
- Prior art keywords
- valve body
- built
- check valve
- connecting plate
- rocking bar
- 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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Abstract
Disclosed is a built-in type check valve. The problems that in an existing check valve, a boss needs to be designed on a cast valve body to meet the requirement for the wall thickness, and therefore the leakage points of the check valve are increased and the sealing performance is poor are mainly solved. The built-in type check valve is characterized in that a connecting plate (5) is arranged in a valve body (1), a pin shaft (6) and a connecting groove (7) matched with a rocking rod (3) are arranged inside the connecting plate (5), the pin shaft (6) penetrates through the rocking rod (3), and the connecting end of the rocking rod (3) can rotate in the connecting groove around the pin shaft (6). The built-in type check valve optimizes a mounting mode and shortens the length of the pin shaft, the boss does not need to be arranged on the valve body, the leakage points of a mechanism are decreased, and the sealing performance of the mechanism is improved.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of built-in safety check.
Background technique
Because nuclear power station valve working operating mode is High Temperature High Pressure often, so more and more higher to the usability requirement of valve, existing external foundry goods valve body structure has not satisfied specific (special) requirements, and long-term the use occurs the phenomenon that leaks outside.The bearing pin of the in the past outlet structure of design drive swing arm is to lead to the valve body outside to enter valve body, so need to satisfy the wall thickness requirement at the valve body design boss of casting, this design meeting has caused the dew point that leaks at the boss place, causes the sealing of mechanism relatively poor.
The model utility content
In order to overcome the deficiency of background technique, the utility model provides a kind of built-in safety check, has mainly solved the requirement that existing safety check need to satisfy at the valve body design boss of casting wall thickness, causes the poor problem of check valve seal performance.
The technological scheme that the utility model adopts is: a kind of built-in safety check, comprise valve body, valve seat, rocking bar, be fixed with flap on the described rocking bar, described valve inner is provided with connecting plate, described connecting plate inside is provided with bearing pin and the connecting groove adaptive with rocking bar, and described bearing pin passes rocking bar and the rocking bar connecting end can rotate in connecting groove around bearing pin.
Described connecting plate top is fixed with four by screw and opens back-up ring, and described valve body is provided with four and opens the adaptive draw-in groove of back-up ring.
Be provided with expansion cavity in the described valve body, described expansion cavity diameter is greater than the valve body inlet diameter.
Be provided with valve gap in the described valve body, described valve gap is positioned at the connecting plate top, is provided with seal ring between described valve gap and the valve body.
The beneficial effects of the utility model are: optimized mounting type, shortened bearing pin length, not be used in boss is set on the valve body, reduced mechanism's leakage point, improved mechanism's sealing.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of connecting plate 5.
1-valve body among the figure, the 2-valve seat, the 3-rocking bar, the 4-flap, the 5-connecting plate, the 6-bearing pin, the 7-connecting groove, the 8-draw-in groove, 9-four opens back-up ring, 10-expansion cavity, 11-valve gap, 12-seal ring.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further:
Such as Fig. 1 in conjunction with shown in Figure 2, a kind of built-in safety check, comprise valve body 1, valve seat 2, rocking bar 3, be fixed with flap 4 on the described rocking bar 3, described valve body 1 inside is provided with connecting plate 5, described connecting plate 5 inside are provided with bearing pin 6 and the connecting groove 7 adaptive with rocking bar 3, and described bearing pin 6 passes rocking bar 3 and rocking bar 3 connecting ends can rotate in connecting groove 7 around bearing pin 6.
Described connecting plate 5 tops are fixed with four by screw and open back-up ring 9, and described valve body 1 is provided with four and opens the adaptive draw-in groove 8 of back-up ring 9.Thereby prevent valve when work connecting plate 5 be rotated and rise and affect sealability.
Be provided with expansion cavity 10 in the described valve body 1, described expansion cavity 10 diameters are greater than valve body 1 inlet diameter.Improved the Lift of flap, thereby reduced medium circulating resistance and the pressure loss of valve, reduced the energy and run off.
Be provided with valve gap 11 in the described valve body 1, described valve gap 11 is positioned at connecting plate 5 tops, is provided with seal ring 12 between described valve gap 11 and the valve body 1.
The concrete use of the utility model is as follows: bearing pin 6 is fixed in the chamber of connecting plate 5, and bearing pin 6 is built in the valve body 1, and liquid can not leak into outside the valve body 1 from bearing pin 6 holes, has reduced the leakage point of mechanism.
The beneficial effect of model utility is: optimized mounting type, shortened bearing pin length, not be used in boss is set on the valve body, reduced mechanism's leakage point, improved mechanism's sealing.
Claims (4)
1. built-in safety check, comprise valve body (1), valve seat (2), rocking bar (3), be fixed with flap (4) on the described rocking bar (3), it is characterized in that: described valve body (1) inside is provided with connecting plate (5), described connecting plate (5) inside is provided with bearing pin (6) and the connecting groove (7) adaptive with rocking bar (3), and described bearing pin (6) passes rocking bar (3) and rocking bar (3) connecting end can rotate in connecting groove (7) around bearing pin (6).
2. built-in safety check according to claim 1, it is characterized in that: described connecting plate (5) top is fixed with four by screw and opens back-up ring (9), and described valve body (1) is provided with four and opens the adaptive draw-in groove (8) of back-up ring (9).
3. built-in safety check according to claim 1, it is characterized in that: be provided with expansion cavity (10) in the described valve body (1), described expansion cavity (10) diameter is greater than valve body (1) inlet diameter.
4. built-in safety check according to claim 1, it is characterized in that: be provided with valve gap (11) in the described valve body (1), described valve gap (11) is positioned at connecting plate (5) top, is provided with seal ring (12) between described valve gap (11) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204699 CN203202310U (en) | 2013-04-22 | 2013-04-22 | Built-in type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204699 CN203202310U (en) | 2013-04-22 | 2013-04-22 | Built-in type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203202310U true CN203202310U (en) | 2013-09-18 |
Family
ID=49146419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320204699 Expired - Lifetime CN203202310U (en) | 2013-04-22 | 2013-04-22 | Built-in type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203202310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545661A (en) * | 2016-11-25 | 2017-03-29 | 南通龙源电站阀门有限公司 | A kind of new stifled valve |
-
2013
- 2013-04-22 CN CN 201320204699 patent/CN203202310U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545661A (en) * | 2016-11-25 | 2017-03-29 | 南通龙源电站阀门有限公司 | A kind of new stifled valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160728 Address after: 323000 Zhejiang Province, Lishui city Liandu District Shuige Industrial Park dayuancun Street No. 107 Patentee after: TEER VALVE HIGH TECHNOLOGY CO.,LTD. Address before: 323000 Zhejiang Province, Lishui City Industrial Park dayuancun Shuige Street No. 107 Patentee before: TEER HOLDING GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |
|
| CX01 | Expiry of patent term |