CN204164378U - composite pressure sealing valve seat - Google Patents
composite pressure sealing valve seat Download PDFInfo
- Publication number
- CN204164378U CN204164378U CN201420496320.6U CN201420496320U CN204164378U CN 204164378 U CN204164378 U CN 204164378U CN 201420496320 U CN201420496320 U CN 201420496320U CN 204164378 U CN204164378 U CN 204164378U
- Authority
- CN
- China
- Prior art keywords
- ring
- valve seat
- pressure seal
- seat
- runner
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008034 disappearance Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
A composite pressure-sealing valve seat, comprising: a body forming a flow channel; a valve disc configured to open or close the flow passage of the body in a rotating manner; a fixed ring arranged on an outer edge of the flow passage; a valve seat ring fixed on an inner edge of the flow passage by the fixing ring, and configured between the fixing ring and the valve disc when the valve disc closes the flow passage of the body; and a disc spring disposed between the valve seat ring and the fixing ring for applying an elastic force to the valve seat ring.
Description
Technical field
This creation is about a kind of seal valve seat, in specific words, relates to a kind of clamping by retaining ring and body and cup spring and seat ring fluid-tight engagement, with the combined pressure seal valve seat making seat ring and valve disc form an interference deformation surface of contact especially.
Background technique
In known techniques, be utilize valve seat to contact to close runner with closure member, wherein valve seat is generally be fixedly installed on valve body, when valve breakdown, valve breakdown part closed and valve seat produce interference phenomenon, and the amount of deformation by valve seat produces pressure, makes it have sealing effect.When valve seat distortion prestressing elastic fatique, valve closure member produces compression force deflection distortion and processing assembling cumulative limit causes the problems such as amount of interference is not enough, is enough to greatly to reduce the sealing effect of valve seat and causes fluid to leak.
In U.S. Publication number the 4th, 905, No. 966 patents, J shape valve seat is arranged on valve body has mobility, and the two reverse pressure directions according to runner are done real time reaction and moved.The J word length end tilt slide surface of contact that to be pliability fixed plate and transverse end be when runner turns off, the inclination closed of its closure member and seat ring forms a convergent wedge type and constructs to seal leak-stopping, seat ring is applied pressure on closure member closely by hydrodynamic pressure, pressure is larger, and its sealing effect just better.Because the angled straight lines formula closed similar U-shaped supporting piece structure of valve seat is abundant, must produce during valve breakdown and interfere resiliently deformable with leak-stopping, the large pressure of relative amount of deformation is also large.Valve seat can make the life-span reduce because the oppressed time elongates, that is the elasticity of seat material can become more and more poor because of having used of a specified duration.
If general meeting as frivolous in butterfly valve valve disc will produce huge amount of deformation when causing being stressed, when especially pressure source is from retaining ring opposite direction, the amount of interference of oppressing in valve seat will strengthen, and valve disc thick and heavyization or valve seat torsion will be caused to strengthen.
U.S. Publication numbers the 4th, 241, No. 895, the 4th, 410, No. 163, the 5th, 249, No. 774, the 5th, in the patents such as 865, No. 422, the thin board type sealing seat sealing surface contact used is only linear sealing, and the little and pressure of the area therefore sealed is large, this kind of sealing effect difference and torsion is large, is its disappearance.
U.S. Publication numbers the 4th, 293, No. 116, the 4th, in the patents such as 487, No. 216, it is applicable to high/low temperature and fire-resistant environment, but because its structure is comparatively complicated and elevated-temperature seal face is the mode of linear sealing, therefore sealing effect difference and torsion is large is its disappearance.
Above-mentioned known techniques still has many disappearances, and haves much room for improvement.
Model utility content
This creation is the improvement being applicable to the various valve seat construction as butterfly valve, ball valve etc., by the structure through combined type valve seat, makes up the deficiency of seat ring material with the excellent resilience feature of cup spring.
The object of this creation is to provide a kind of combined pressure seal valve seat, and valve seat construction elasticizing makes valve disc can be extremely frivolous, and does not worry compressive deformation amount, still can keep good sealing effect.The object of this creation, when the sealing surface length making valve disc and valve seat ring contact interfere strengthens, is contribute to promoting sealing effect.
Another object of this creation is to provide a kind of combined pressure seal valve seat, and it is applicable to any high low pressure environment, processing assembling is simple and easily keep in repair and can automatically make up processing assembly error.
The another object of this creation is to provide a kind of combined pressure seal valve seat, can drop to minimum by the switch torsion that valve base sealing pressure produces.
An object again of this creation is to provide a kind of combined pressure seal valve seat, sealing surface length is strengthened and centre plane drops, to reduce the frictional loss in switching process, and increases working life.
The combined pressure seal valve seat achieved the above object, comprises: a body, forms a runner; One valve disc, is configured to the runner that rotating manner is opened or closed this body; One retaining ring, is located at an external side brim of this runner; One seat ring, be fixed on an inner side edge of this runner, and when this valve disc closes the runner of this body, this seat ring is configured between this retaining ring and this valve disc by this retaining ring; And a cup spring, be arranged between this seat ring and this retaining ring, in time bestow an elastic force and act on this seat ring.
Preferably, this seat ring has one first section and one second section, and the first section of this seat ring is held on this inner side edge of this runner by this retaining ring, and this second section fluid-tight engagement of this cup spring and this seat ring.
Preferably, when this valve disc closes the runner of this body, the first section of this valve disc and this seat ring and the middle of the second section form an interference deformation surface of contact.
Preferably, this first section is a fixed plate, and this fixed plate is between this body and this retaining ring, and the below of this first section has a non-contacting part, and this non-contacting part is a board with pliability.
Preferably, this seat ring has arch structure, and these arch structure are the use as the support of interference fit between this valve disc and this seat ring.
Preferably, be that face engages between this cup spring and the second section of this seat ring.
Preferably, the face that this seat ring abuts this valve disc forms an interference deformation surface of contact, uses sealing and turns off the runner of this body.
Preferably, to bestow flowing to of the direction of this elastic force and this runner substantial parallel for this cup spring.
Preferably, comprise one first flange gasket further, be located at the outer side surface of this retaining ring and engage with this retaining ring; And one second flange gasket, be located at the outer side surface of this body and engage with this body.
Preferably, the material of this seat ring is that iron is not imperial, and the material of this cup spring is any one of following stainless steel numbering 301,6150.
Accompanying drawing explanation
Figure 1A shows the exploded view that this creates the combined pressure seal valve seat of the first embodiment.
Figure 1B shows the constitutional diagram that this creates the combined pressure seal valve seat of the first embodiment.
Fig. 1 C shows the decomposing section that this creates the combined pressure seal valve seat of the first embodiment.
Fig. 1 D shows the combination section that this creates the combined pressure seal valve seat of the first embodiment.
Fig. 1 E is the enlarged view of display Fig. 1 D rectangle A.
Fig. 1 F is the enlarged view of the oval B of display Fig. 1 E.
Fig. 1 G is the transverse cross-sectional view of display Figure 1B.
Fig. 1 H is the enlarged view of the circular C of display Fig. 1 G.
Fig. 2 A shows the exploded view that this creates the combined pressure seal valve seat of the second embodiment.
Fig. 2 B shows the constitutional diagram that this creates the combined pressure seal valve seat of the second embodiment.
Fig. 2 C shows the decomposing section that this creates the combined pressure seal valve seat of the second embodiment.
Fig. 2 D shows the combination section that this creates the combined pressure seal valve seat of the second embodiment.
Fig. 2 E is the enlarged view of display Fig. 2 D rectangle D.
Fig. 2 F is the enlarged view of the oval E of display Fig. 2 E.
Fig. 2 G is the transverse cross-sectional view of display Fig. 2 B.
Fig. 2 H is the enlarged view of the circular F of display Fig. 2 G.
Fig. 3 A is the exploded view of the combined pressure seal valve seat of display this creation the 3rd embodiment.
Fig. 3 B is the constitutional diagram of the combined pressure seal valve seat of display this creation the 3rd embodiment.
Fig. 3 C is the decomposing section of the combined pressure seal valve seat of display this creation the 3rd embodiment.
Fig. 3 D is the combination section of the combined pressure seal valve seat of display this creation the 3rd embodiment.
Fig. 3 E is the enlarged view of display Fig. 3 D rectangle G.
Fig. 3 F is the enlarged view of the oval H of display Fig. 3 E.
Fig. 3 G is the transverse cross-sectional view of display Fig. 3 B.
Fig. 3 H is the enlarged view that display the 3rd G schemes circular I.
Embodiment
Although institute's accompanying drawings of consulting containing this creation preferred embodiment fully describes by this creation, before this describes, should be appreciated that the personage being familiar with one's own profession can revise creation described herein, obtain effect of this creation simultaneously.Therefore, Yan Weiyi discloses widely to the personage being familiar with one's own profession skill must to understand above description, and its content does not lie in and limits this creation.
Refer to Figure 1A, Figure 1B, Fig. 1 C, Fig. 1 D, show exploded view, constitutional diagram, decomposing section, the combination section that this creates the combined pressure seal valve seat of the first embodiment respectively, and coordinate consult enlarged view that Fig. 1 E is display Fig. 1 D rectangle A, enlarged view that transverse cross-sectional view that enlarged view that Fig. 1 F is the oval B of display Fig. 1 E, Fig. 1 G are display Figure 1B and Fig. 1 H are the circular C of display Fig. 1 G.This combined pressure seal valve seat 1 creating the first embodiment comprises: a body 2, has a containing space to form a runner 20, pass through for fluid in the middle of this body 2; One valve disc 3, is connected to this body 2 and is located at the left side of this body 2, and this valve disc 3 is configured to the runner 20 that rotating manner opens or close this body 2, makes fluid be circulated in this runner 20 or be turned off; One retaining ring 5, is located at an external side brim of this runner 20; One seat ring 4, be fixed on an inner side edge of this runner 20, and when this valve disc 3 closes the runner 20 of this body 2, this seat ring 4 is configured between this retaining ring 5 and this valve disc 3 by this retaining ring 5; And a cup spring 6, be arranged between this seat ring 4 and this retaining ring 5, and bestow an elastic force and act on this seat ring 4.
It is worth mentioning that, this seat ring 4 has one first section 41 and one second section 42, and the first section 41 of this seat ring 4 is held on this inner side edge of this runner 20 by this retaining ring 5, and this second section 42 fluid-tight engagement of this cup spring 6 and this seat ring 4.When this valve disc 3 closes the runner 20 of this body 2, this valve disc 3 forms interference fit with the first section 41 of this seat ring 4 and the middle of the second section 42, that is, one curved surface 43 of this seat ring 4 is closely connected to a curved surface 31 of this valve disc 3 and then forms an interference deformation surface of contact, and wherein this interference deformation surface of contact can seal and turn off the runner 20 of this body 2.It is substantial parallel that flowing to of the direction of this elastic force and this runner 20 bestowed by this cup spring 6.Preferably, this first section 41 is a fixed plate, and this fixed plate, between this body 2 and this retaining ring 5, forms a non-contacting part 411 between this first section 41 and this interference deformation surface of contact, and this non-contacting part 411 is a board with pliability.This seat ring 4 has arch structure 44, and these arch structure 44 are the use as the support of interference fit between this valve disc 3 and this seat ring 4.The right flank of this cup spring 6 engages to form a surface of contact 61 with the second section 42 of this seat ring 4.This retaining ring 5 forms a surface of contact 51 with this cup spring 6, and this retaining ring 5 has a stop surface 52, and this stop surface 52 is in order to the displacement of this seat ring 4 of backstop.The left side that this seat ring 4 is positioned at these arch structure 44 has a horizontal plane 45, and this horizontal plane 45 forms a surface of contact with this retaining ring 5.
This creation combined pressure seal valve seat 1 comprises one first flange gasket 7 further, and this first flange gasket 7 is located at the left surface of this retaining ring 5 and is engaged with this retaining ring 5; And comprising one second flange gasket 8 further, this second flange gasket 8 is located at the right flank of this body 2 and is engaged with this body 2.It is worth mentioning that, the material of this seat ring 4 is that iron is not imperial.The material of this cup spring 6 is any one of following stainless steel numbering 301,6150.
Refer to Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D, show exploded view, constitutional diagram, decomposing section, the combination section that this creates the combined pressure seal valve seat of the second embodiment respectively, and coordinate consult enlarged view that Fig. 2 E is display Fig. 2 D rectangle D, enlarged view that transverse cross-sectional view that enlarged view that Fig. 2 F is the oval E of display Fig. 2 E, Fig. 2 G are display Fig. 2 B and Fig. 2 H are the circular F of display Fig. 2 G.This combined pressure seal valve seat 11 creating the second embodiment is roughly the same with the combined pressure seal valve seat 1 of the first embodiment, unique difference be in: the shape and structure of the seat ring 14 of the combined pressure seal valve seat 11 of the second embodiment is not identical with the shape and structure of the seat ring 4 of the combined pressure seal valve seat 1 of the first embodiment.Placement as other assembly is all roughly the same with the first embodiment with configuration, therefore will repeat no more at this.It is worth mentioning that, in a second embodiment, refer to Fig. 2 E and Fig. 2 F, the downside of this cup spring 6 engages to form a surface of contact 62 with the upper side of the second section 142 of this seat ring 14, they are different from the configuration mode of the first embodiment, can compare simultaneously consult Fig. 2 F and Fig. 1 F, can understand, and the upper side of this cup spring 6 engage to form a surface of contact 51 with this retaining ring 5.One curved surface 143 of this seat ring 14 is closely connected to a curved surface 31 of this valve disc 3 and then forms an interference deformation surface of contact, uses sealing and turns off the runner 20 of this body 2.
Refer to Fig. 3 A, Fig. 3 B, Fig. 3 C, Fig. 3 D, exploded view, constitutional diagram, decomposing section, the combination section of the combined pressure seal valve seat showing this creation the 3rd embodiment respectively, and coordinate consult enlarged view that Fig. 3 E is display Fig. 3 D rectangle G, enlarged view that transverse cross-sectional view that enlarged view Fig. 3 G that Fig. 3 F is the oval H of display Fig. 3 E is display Fig. 3 B and Fig. 3 H are the circular I of display Fig. 3 G.The combined pressure seal valve seat 21 of this creation the 3rd embodiment is roughly the same with the combined pressure seal valve seat 1 of the first embodiment, unique difference be in: the shape and structure of the seat ring 24 of the combined pressure seal valve seat 21 of the 3rd embodiment is not identical with the shape and structure of the seat ring 4 of the combined pressure seal valve seat 1 of the first embodiment.Placement as other assembly is all roughly the same with the first embodiment with configuration, therefore will repeat no more at this.It is worth mentioning that, in the third embodiment, refer to Fig. 3 E and Fig. 3 F, the right flank of this cup spring 6 engages to form a surface of contact 63 with the vertical section 245 upwards extended of the second section 242 of this seat ring 24, the configuration mode of itself and the first embodiment and the second embodiment neither with, can compare simultaneously consult Fig. 3 F, Fig. 2 F and Fig. 1 F, can understand, and the upper side of this cup spring 6 engage to form a surface of contact 51 with this retaining ring 5.One curved surface 243 of this seat ring 24 is closely connected to a curved surface 31 of this valve disc 3 and then forms an interference deformation surface of contact, uses sealing and turns off the runner 20 of this body 2.
Now using this combined pressure seal valve seat 1 creating the first embodiment as explanation: when upstream extremity is in this retaining ring 5 side, hydrodynamic pressure can act on this valve disc 3, this cup spring 6, (inner side refers to the Inner arc curved surface of these arch structure 44 for second section 42 of this seat ring 4 and the interior outside of this arch structure 44, and outside refers to this curved surface 43), due to board with pliability (i.e. this non-contacting part 411 of this seat ring 4, 1411, 2411) amount of movement comparatively this valve disc 3 is large, its result be then by these arch structure 44 inside the closed (i.e. curved surface 31) of closed (i.e. curved surface 43) and this valve disc 3 pressurize and touch, this seat ring 4 simultaneously, this valve disc 3 seals inclined slide (i.e. curved surface 43 and curved surface 31), outside these arch structure 44, (i.e. horizontal plane 45) and this retaining ring 5 inner slide face (i.e. surface of contact 51) form a convergent wedge type and construct, will be better to reach the larger sealing effect of pressure.
But when upstream extremity in the opposite direction time, hydrodynamic pressure direct weighting is at this valve disc 3 synchronizing moving upper with the board with pliability (i.e. this non-contacting part 411,1411,2411) of this seat ring 4, due to this board with pliability amount of movement can not comparatively this valve disc 3 be large, form an anti-convergent wedge type construct although this seat ring 4, this valve disc 3 seal (i.e. horizontal plane 45) and this retaining ring 5 inner slide face (i.e. surface of contact 51) outside inclined slide (i.e. curved surface 43 and curved surface 31), these arch structure 44.But because the second section 42 of this seat ring 4, this cup spring 6 are bonded with each other with this retaining ring 5, therefore strength can be pushed back the closed (i.e. curved surface 43) of this seat ring 4 and the closed (i.e. curved surface 31) of this valve disc 3 to this cup spring 6, this seat ring 4 are counter and pressurize and touch by this retaining ring 5.
The advantage of this creation is: utilize the arch structure of seat ring, valve disc and cup spring to assemble and pressurize to form an interference deformation surface of contact, interference deformation amount is little and sponge valve disc and seat ring amount of deformation by cup spring, and maintaining stable interference springback capacity, valve breakdown moment torsion is light, operating characteristics is stablized.Sealing face length, pressure is little, and abrasion reduce and to increase the service life and under valve seat construction is simply applicable to high and low temperature environment.Processing assembling is simple, and the reduction gear box that namely torsion is little assembles and driver diminish, can reach product compact, have environmental protection, low cost dynamical target concurrently.This creation combined pressure seal valve seat can be applied on the high self-acting valve product of switching frequency, especially installs the self-acting valve of steam-operating driver additional.
After the preferred embodiment describing this creation in detail, be familiar with this technology personage can clearly understand, do not departing under following claim and spirit and can carry out various change and change, and this creation is not also limited to the mode of execution of illustrated embodiment in specification.
[symbol description]
1,11,21 combined pressure seal valve seats
2 bodies
3 valve discs
4,14,24 seat rings
5 retaining rings
6 cup springs
7 first flange gaskets
8 second flange gaskets
20 runners
31,43,143,243 curved surfaces
45 horizontal planes
51,61,62,63 surface of contact
52 stop surfaces
41,141,242 first sections
42,142,242 second sections
44 arch structure
245 vertical sections
411,1411,2411 non-contacting parts.
Claims (10)
1. a combined pressure seal valve seat, comprises:
One body, forms a runner;
One valve disc, is configured to the runner that rotating manner is opened or closed this body;
One retaining ring, is located at an external side brim of this runner;
One seat ring, be fixed on an inner side edge of this runner, and when this valve disc closes the runner of this body, this seat ring is configured between this retaining ring and this valve disc by this retaining ring; And
One cup spring, is arranged between this seat ring and this retaining ring, and bestows an elastic force and act on this seat ring.
2. combined pressure seal valve seat according to claim 1, wherein this seat ring has one first section and one second section, first section of this seat ring is held on this inner side edge of this runner by this retaining ring, and this second section fluid-tight engagement of this cup spring and this seat ring.
3. combined pressure seal valve seat according to claim 2, when wherein this valve disc closes the runner of this body, the first section of this valve disc and this seat ring and the middle of the second section form an interference fit.
4. combined pressure seal valve seat according to claim 2, wherein this first section is a fixed plate, and this fixed plate is between this body and this retaining ring, and the below of this first section has a non-contacting part, and this non-contacting part is a board with pliability.
5. combined pressure seal valve seat according to claim 2, wherein this seat ring has arch structure, and these arch structure are the use as the support of interference fit between this valve disc and this seat ring.
6. combined pressure seal valve seat according to claim 2 is wherein that face engages between this cup spring and the second section of this seat ring.
7. combined pressure seal valve seat according to claim 1, the face that wherein this seat ring abuts this valve disc forms an interference deformation surface of contact, uses sealing and turns off the runner of this body.
8. combined pressure seal valve seat according to claim 1, wherein to bestow flowing to of the direction of this elastic force and this runner substantial parallel for this cup spring.
9. combined pressure seal valve seat according to claim 1, comprises one first flange gasket further, is located at the outer side surface of this retaining ring and engages with this retaining ring; And one second flange gasket, be located at the outer side surface of this body and engage with this body.
10. combined pressure seal valve seat according to claim 1, wherein the material of this seat ring is that iron is not imperial, and the material of this cup spring is any one of following stainless steel numbering 301,6150.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103212333 | 2014-07-11 | ||
| TW103212333U TWM487970U (en) | 2014-07-11 | 2014-07-11 | Composite pressure seal valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164378U true CN204164378U (en) | 2015-02-18 |
Family
ID=52108893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420496320.6U Expired - Fee Related CN204164378U (en) | 2014-07-11 | 2014-08-29 | composite pressure sealing valve seat |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204164378U (en) |
| TW (1) | TWM487970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235395A (en) * | 2014-07-11 | 2014-12-24 | 超阀精密有限公司 | composite pressure sealing valve seat |
| CN108026830A (en) * | 2015-07-14 | 2018-05-11 | T·A·哈特曼 | Ring spring valve seat and the butterfly valve with ring spring valve seat |
-
2014
- 2014-07-11 TW TW103212333U patent/TWM487970U/en not_active IP Right Cessation
- 2014-08-29 CN CN201420496320.6U patent/CN204164378U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235395A (en) * | 2014-07-11 | 2014-12-24 | 超阀精密有限公司 | composite pressure sealing valve seat |
| CN108026830A (en) * | 2015-07-14 | 2018-05-11 | T·A·哈特曼 | Ring spring valve seat and the butterfly valve with ring spring valve seat |
| CN108026830B (en) * | 2015-07-14 | 2020-02-14 | T·A·哈特曼 | Spring ring valve seat and butterfly valve with same |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM487970U (en) | 2014-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102575780B (en) | Multi-seal Knife Gate Valve | |
| CN102472398B (en) | The axial seal of spring | |
| CN204164378U (en) | composite pressure sealing valve seat | |
| CN105764732A (en) | Valve device for vehicle | |
| US9322482B2 (en) | Temperature compensating flanged joint for a teflon diaphragm valve | |
| CN109642674A (en) | Sealing device and seal assembly | |
| CN103470793B (en) | Double inclined plane eccentric-butterfly-valve | |
| CN104235395A (en) | composite pressure sealing valve seat | |
| CN105003672B (en) | A kind of Novel-parallel gate valve | |
| CN203500514U (en) | Eccentric butterfly valve with two inclined planes | |
| CN102221092A (en) | Seal ring structure of flexible seal butterfly valve | |
| CN205448716U (en) | Cold quick -witted seal structure of pelletizing ring and cold machine of pelletizing ring | |
| CN209839201U (en) | Gate valve and stop valve combined system | |
| CN210978592U (en) | All-metal hard-to-hard-sealing wear-resistant ball valve | |
| KR101265704B1 (en) | Butterfly valve | |
| CN203743476U (en) | Pollution-free metal membrane seal ball valve | |
| CN214999503U (en) | Gate valve | |
| CN208565582U (en) | A kind of angle plane sealed butterfly valve | |
| CN215410143U (en) | Vacuum proportional valve sealing composite part | |
| CN205780835U (en) | A kind of valve sealing ring of good sealing effect | |
| CN210218792U (en) | Four-way ball valve | |
| CN205244451U (en) | High sealed dark pole wafer valve | |
| CN104455448A (en) | Wide seal | |
| CN203823103U (en) | Novel parallel gate valve | |
| CN203823344U (en) | Low resistance zero-pressure sealing flexible flap valve |
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: 20150218 Termination date: 20200829 |