CN217177458U - Corrugated pipe stop valve with valve seat double-sealing structure - Google Patents
Corrugated pipe stop valve with valve seat double-sealing structure Download PDFInfo
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- CN217177458U CN217177458U CN202220696572.8U CN202220696572U CN217177458U CN 217177458 U CN217177458 U CN 217177458U CN 202220696572 U CN202220696572 U CN 202220696572U CN 217177458 U CN217177458 U CN 217177458U
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- 238000007789 sealing Methods 0.000 title claims abstract description 105
- 239000012530 fluid Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a bellows stop valve with valve seat double-seal structure, includes valve body, valve rod and valve gap, form the valve pocket in the valve body, valve rod one end is passed the valve gap and is stretched into the valve pocket, set up disk seat and valve clack in the valve pocket, the one end that the valve rod stretched into the valve pocket is connected with the valve clack, set up the valve seat double-seal structure on the valve seat, the valve seat double-seal structure is including setting up sealed annular and the sealed bulge on the valve seat, set up the valve seat sealing member on the valve seat, the valve seat sealing member has annular seal end and bulge seal end, annular seal end and bulge seal end connect with sealed annular and sealed bulge respectively, through set up the valve seat double-seal structure on the valve seat to the sealed valve clack that has connect mutually on the valve seat double-seal structure, make when closing the runner under the drive of valve rod, the annular seal end and the bulge seal end that the second step face of valve clack corresponds, thereby forming a double seal.
Description
Technical Field
The utility model relates to a bellows stop valve technical field, concretely relates to bellows stop valve with disk seat double containment structure.
Background
The corrugated pipe stop valve is also called a corrugated pipe sealing stop valve, and a metal barrier is formed between a fluid medium and the atmosphere through automatic roll welding so as to ensure the design of zero leakage of the valve rod. The inside of the corrugated pipe stop valve adopts a corrugated pipe structure, and the lower end of a stainless steel corrugated pipe is welded on the valve rod so as to prevent process fluid from corroding the valve rod. The other end is arranged between the valve body and the valve cover to form static seal. Adopt dual sealed design if the bellows inefficacy valve rod filler also can avoid leaking, the bellows welds in the operating characteristic that the valve rod remains stable, avoids because valve plug vibration causes the valve rod vibration. The stop valve is most suitable for pipelines of steam, inflammable, explosive, heat conducting oil, high-purity, toxic and other media, and the stop valve used in a system with corrosive and toxic liquid or gas as a medium needs to be well protected against corrosion and leakage.
The valve seat and the valve clack of the existing bellows stop valve are usually sealed by arranging an O-shaped sealing ring on the valve seat, and the O-shaped sealing ring is easy to wear and cause leakage after long-term use.
Disclosure of Invention
In view of this, the utility model provides a bellows stop valve with disk seat double-seal structure.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a bellows stop valve with disk seat double-seal structure, includes valve body, valve rod and valve gap, form the valve pocket in the valve body, valve rod one end is passed the valve gap and is stretched into the valve pocket, set up disk seat and valve clack in the valve pocket, the valve rod stretches into the one end of valve pocket and is connected with the valve clack, set up disk seat double-seal structure on the disk seat, disk seat double-seal structure is including setting up sealed annular and the sealed bulge on the disk seat, set up the disk seat sealing member on the disk seat, the disk seat sealing member has annular seal end and protrusion seal end, annular seal end and protrusion seal end connect with sealed annular and sealed bulge are sealed respectively.
Preferably, the valve seat has a first sealing surface and a second sealing surface, the first sealing surface is disposed at the top end of the valve seat, the center of the valve seat is provided with a flow passage through hole, the second sealing surface is a hole wall of the flow passage through hole, the sealing ring groove is disposed on the first sealing surface, the sealing protrusion is disposed on the second sealing surface, the sealing protrusion is formed by protruding the second sealing surface towards the center of the flow passage through hole, the ring groove sealing end of the valve seat sealing member extends into the sealing ring groove to be connected with the first sealing surface, and the sealing end protrudes.
Preferably, a sealing element limiting end is arranged between the first sealing surface and the second sealing surface, a limiting connection ring groove is arranged at the position, corresponding to the sealing element limiting end, of the valve seat sealing element, the sealing ring groove is arranged between the ring groove sealing end and the protruding sealing end, the sealing ring groove is arranged at one side close to the ring groove sealing end, and the sealing element limiting end stretches into the limiting connection ring groove to be connected with the valve seat sealing element in a limiting mode.
Preferably, the cross-section of the valve clack is arranged in a step shape, the valve clack is provided with a first step surface and a second step surface, the first step surface presses the annular groove sealing end of the valve seat sealing element, and the second step surface presses the protruding sealing end which is connected with the sealing protruding part on the valve seat sealing element in a sealing mode.
Preferably, the width of the second step surface is greater than the width of the sealing protrusion, and the width of the protruding sealing end of the valve seat sealing member is the same as the width of the second step surface.
Preferably, the valve seat sealing element is made of elastic rubber.
The beneficial effects of the utility model reside in that: the utility model discloses a set up disk seat double-seal structure on the disk seat to disk seat double-seal structure is last to seal and has connect the disk seat sealing member mutually, makes the valve clack close the runner under the drive of valve rod when, and the first step face and the second step face of valve clack compress tightly corresponding annular seal end and protrusion seal end, thereby form double seal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The invention will be further described with reference to the accompanying drawings.
The utility model provides a following technical scheme:
as shown in fig. 1-2, the utility model discloses a bellows stop valve with disk seat double-seal structure, including valve body 1, valve rod 2 and valve gap 3, form valve pocket 4 in the valve body 1, valve rod 2 one end is passed valve gap 3 and is stretched into valve pocket 4, set up disk seat 5 and valve clack 6 in the valve pocket 4, valve rod 2 stretches into the one end and the valve clack 6 of valve pocket 4 and is connected, set up disk seat double-seal structure 7 on the disk seat 5, disk seat double-seal structure 7 is including setting up sealed annular 8 and the sealed bulge 9 on disk seat 5, set up disk seat sealing member 17 on the disk seat 5, disk seat sealing member 17 has annular seal end 10 and protrusion seal end 11, annular seal end 10 and protrusion seal end 11 are connected with sealed annular 8 and sealed bulge 9 seal respectively. Specifically, in this design, through set up valve seat double-seal structure 7 on valve seat 5 to valve seat double-seal structure 7 goes up the sealed valve seat sealing member 17 that has connect mutually, makes valve clack 6 when the runner is closed under the drive of valve rod 2, and the first step face 18 and the second step face 19 of valve clack 6 compress tightly corresponding annular groove seal end 10 and protrusion seal end 11, thereby forms double seal.
Further, the disk seat 5 has the sealed face of first sealed 12 and second 13, the sealed face of first 12 sets up on the 5 tops of disk seat, runner through-hole 14 is seted up at the 5 centers of disk seat, the sealed face of second 13 is the pore wall of runner through-hole 14, sealed annular 8 sets up on first sealed face 12, sealed bulge 9 sets up on the sealed face of second 13, sealed bulge 9 is formed towards the central protrusion of runner through-hole 14 by the sealed face of second 13, annular seal end 10 of disk seat sealing member 17 stretches into sealed annular 8 and is connected with first sealed face 12, set up the spread groove on the sealed end of protrusion 11, sealed bulge 9 stretches into the spread groove and is connected with the sealed end of protrusion 11, the corresponding sealed bulge of spread groove 9 sets up to the annular structure.
Further, set up the spacing end 15 of sealing member between first sealed face 12 and the sealed face 13 of second, valve seat sealing member 17 corresponds the spacing end 15 of sealing member and sets up spacing connection annular 16, sealed annular 8 sets up between annular sealed end 10 and protruding sealed end 11, just sealed annular 8 sets up in the one side that is close to annular sealed end 10, the spacing end 15 of sealing member stretches into spacing connection annular 16 and valve seat sealing member 17 spacing connection. In order to prevent the valve seat sealing element 17 from falling off, the sealing element limiting end 15 is arranged between the first sealing surface 12 and the second sealing surface 13, so that the valve seat sealing element 17 is in limiting connection with the sealing element limiting end 15 through the limiting connection ring groove 16, the valve seat sealing element 17 is connected with the sealing element limiting end 15 on the first sealing surface 12 of the valve seat 5, and is connected with the sealing bulge 9 on the second sealing surface 13 of the valve seat 5, and the valve seat sealing element 17 is fixed on the valve seat 5.
Further, the cross-section of valve clack 6 is the echelonment setting, valve clack 6 has first step face 18 and second step face 19, first step face 18 compresses tightly the sealed end 10 of the annular of valve seat sealing member 17, second step face 19 compresses tightly the sealed end 11 of the sealed salient that meets with sealed bulge 9 on the valve seat sealing member 17.
Further, in order to improve the sealing degree between the valve seat 5 and the valve flap 6, the present design sets the width of the second step surface 19 to be greater than the width of the sealing protrusion 9, and the width of the protruding sealing end 11 of the valve seat seal 17 to be the same as the width of the second step surface 19.
Further, the valve seat seal 17 is made of an elastic rubber material.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a bellows stop valve with disk seat double containment structure, includes valve body, valve rod and valve gap, form the valve pocket in the valve body, valve rod one end is passed the valve gap and is stretched into the valve pocket, set up disk seat and valve clack in the valve pocket, the valve rod stretches into the one end and the valve clack of valve pocket and is connected its characterized in that: set up disk seat double-seal structure on the disk seat, disk seat double-seal structure is including setting up sealed annular and the sealed bulge on the disk seat, set up valve seat sealing member on the disk seat, valve seat sealing member has annular sealed end and the sealed end of protrusion, annular sealed end and the sealed end of protrusion are sealed to be met with sealed annular and sealed bulge respectively.
2. The bellows shut-off valve with a valve seat double sealing structure according to claim 1, wherein: the valve seat is provided with a first sealing surface and a second sealing surface, the first sealing surface is arranged at the top end of the valve seat, the center of the valve seat is provided with a flow passage through hole, the second sealing surface is a hole wall of the flow passage through hole, the sealing ring groove is arranged on the first sealing surface, the sealing bulge is arranged on the second sealing surface, the sealing bulge is formed by the second sealing surface protruding towards the center of the flow passage through hole, and the ring groove sealing end of the valve seat sealing element extends into the sealing ring groove to be connected with the first sealing surface.
3. The bellows shut-off valve with a valve seat double sealing structure according to claim 2, wherein: set up the spacing end of sealing member between first sealed face and the second sealed face, the valve seat sealing member corresponds the spacing end of sealing member and sets up spacing connection annular, the setting of sealed annular is between annular seal end and protruding seal end, just the setting of sealed annular is in the one side that is close to the annular seal end, the spacing end of sealing member stretches into spacing connection annular and the spacing connection of valve seat sealing member.
4. The bellows shut-off valve with a valve seat double sealing structure according to claim 1, wherein: the cross-section of valve clack is the echelonment setting, the valve clack has first step face and second step face, the sealed end of annular of first step face pressure valve seat sealing member, the sealed protruding sealed end that meets with sealed bulge on the second step face pressure valve seat sealing member.
5. The bellows shut-off valve with a valve seat double sealing structure according to claim 4, wherein: the width of the second step surface is larger than that of the sealing bulge, and the width of the convex sealing end of the valve seat sealing member is the same as that of the second step surface.
6. The bellows shut-off valve with a valve seat double sealing structure according to claim 1, wherein: the valve seat sealing piece is made of elastic rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220696572.8U CN217177458U (en) | 2022-03-28 | 2022-03-28 | Corrugated pipe stop valve with valve seat double-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220696572.8U CN217177458U (en) | 2022-03-28 | 2022-03-28 | Corrugated pipe stop valve with valve seat double-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217177458U true CN217177458U (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220696572.8U Active CN217177458U (en) | 2022-03-28 | 2022-03-28 | Corrugated pipe stop valve with valve seat double-sealing structure |
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| Country | Link |
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| CN (1) | CN217177458U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231758A (en) * | 2023-11-13 | 2023-12-15 | 高碑店市航之辉机械设备有限公司 | High-temperature-resistant stop valve for spaceflight |
| WO2025085637A1 (en) * | 2023-10-18 | 2025-04-24 | Dresser, Llc | Secondary seal on a safety valve |
-
2022
- 2022-03-28 CN CN202220696572.8U patent/CN217177458U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025085637A1 (en) * | 2023-10-18 | 2025-04-24 | Dresser, Llc | Secondary seal on a safety valve |
| CN117231758A (en) * | 2023-11-13 | 2023-12-15 | 高碑店市航之辉机械设备有限公司 | High-temperature-resistant stop valve for spaceflight |
| CN117231758B (en) * | 2023-11-13 | 2024-01-09 | 高碑店市航之辉机械设备有限公司 | High-temperature-resistant stop valve for spaceflight |
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