CN210566269U - Corrugated pipe stop valve - Google Patents
Corrugated pipe stop valve Download PDFInfo
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- CN210566269U CN210566269U CN201920985883.4U CN201920985883U CN210566269U CN 210566269 U CN210566269 U CN 210566269U CN 201920985883 U CN201920985883 U CN 201920985883U CN 210566269 U CN210566269 U CN 210566269U
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Abstract
The utility model relates to a bellows stop valve, including driving hand wheel, valve rod, valve gap, valve body, valve clack and valve seat, still include the well lid that links firmly between valve gap and valve body and set up the bellows subassembly in the through-hole of well lid, valve rod one end links firmly with driving hand wheel, and the other end passes the through-hole of valve gap and well lid and stretches into the valve pocket of valve body and links firmly with the valve clack, the bellows subassembly include the wave dish; a guide piece; the corrugated pipe is sleeved on the valve rod; and the upper connecting disc and the lower connecting disc are fixedly connected to the two ends of the corrugated pipe, a mounting groove for mounting the wave disc is formed in the joint of the valve cover and the middle cover, and the guide piece is fixed on the valve rod. Through setting up the well lid that is used for installing the bellows specially, increased the length of bellows, reduce the bellows extension pressure, improve the life of bellows, the change of the bellows of being convenient for sets up the guide vane in the bellows moreover, prevents effectively that the valve rod from inclining, guarantees the accuracy of valve clack and disk seat seal to improve the sealing performance of valve.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to bellows stop valve.
Background
At present, the throttling stop valve is widely applied to pipelines of petrochemicals and the like, and has throttling and cutting functions on the pipelines. The throttling stop valve is structurally composed of a driving hand wheel, a valve rod, a valve cover, a valve body, a valve clack and a valve seat, wherein the valve clack and the valve seat are located in the valve body, the valve cover is fixed on the valve body, the valve rod penetrates through the valve cover, the inner end of the valve rod extends into the valve body and is fixed with the valve clack, the driving hand wheel is arranged at the outer end of the valve rod, and the inner end of the valve rod forms sealing fit with the valve clack after the valve is closed.
The bellows of current stop valve directly sets up in the valve gap, the both ends welding of bellows is on the mounting panel, the stress variation between mounting panel and the bellows during stop valve switch action, lead to the bellows to break very easily, this kind of structure not only produces easily and leaks, and the change of bellows is very inconvenient in addition, valve rod up-and-down motion in valve body and valve gap among the valve clack switching process, the valve rod slopes easily, produce radially cheap with the disk seat easily when leading to the valve clack to close, lead to sealed cooperation not tight and produce the leakage.
SUMMERY OF THE UTILITY MODEL
To the not enough in the background art, the utility model provides a bellows stop valve.
The utility model adopts the technical proposal that: a corrugated pipe stop valve comprises a driving hand wheel, a valve rod, a valve cover, a valve body, a valve clack and a valve seat, and further comprises a middle cover fixedly connected between the valve cover and the valve body and a corrugated pipe assembly arranged in a through hole of the middle cover, wherein one end of the valve rod is fixedly connected with the driving hand wheel, the other end of the valve rod penetrates through the through holes of the valve cover and the middle cover and extends into a valve cavity of the valve body to be fixedly connected with the valve clack, and the corrugated pipe assembly comprises a wave disc; a guide piece; the corrugated pipe is sleeved on the valve rod; and the upper connecting disc and the lower connecting disc are fixedly connected to the two ends of the corrugated pipe, a mounting groove for mounting the wave disc is formed in the joint of the valve cover and the middle cover, the guide piece is fixed on the valve rod, the upper connecting disc is fixed on the wave disc, and the lower connecting disc is fixed on the guide piece.
Furthermore, the binding surfaces between the upper end surface of the wave disc and the valve cover and between the lower end surface of the wave disc and the middle cover are provided with first sealing rings, and the lower end surface of the wave disc positioned at the inner side of the first sealing rings and the upper end surface of the middle cover are provided with wave disc steps.
Furthermore, a gap is formed between the guide sheet and the inner wall of the through hole, and the linear distance of the gap is 0.5-2 mm.
Furthermore, a second sealing ring is arranged on a binding surface between the middle cover and the valve body, and a middle cover step is arranged on the lower end face of the middle cover and the upper end face of the valve body which are positioned on the inner side of the second sealing ring.
Furthermore, the cross section of the middle cover is of an I-shaped structure, two ends of the middle cover are fixedly connected with the valve cover and the valve body respectively through bolts, and reinforcing ribs are arranged on the middle cover.
Furthermore, a bearing and a bearing cover are arranged at the top of the valve cover.
Furthermore, a guide block is fixed on the valve cover through a bolt, and the valve rod movably penetrates through a guide hole of the guide block.
The utility model has the advantages that: the utility model discloses a setting up the well lid that is used for installing the bellows specially, increased the length of bellows, reduce the bellows extension pressure, improve the life of bellows, the change of the bellows of being convenient for sets up the guide vane in the bellows moreover, effectively prevents the valve rod slope, guarantees valve clack and disk seat sealing's accuracy to improve the sealing performance of valve.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the middle cover.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view of fig. 2 at B.
In the figure: 1. driving a hand wheel; 2. a valve stem; 3. a valve cover; 4. a valve body; 5. a valve flap; 6. a valve seat; 7. a middle cover; 8. a through hole; 9. a wave disc; 10. a guide piece; 11. an upper connecting disc; 12. a lower connecting disc; 13. a bellows; 14. mounting grooves; 15. a first seal ring; 16. a wave disc step; 17. a gap; 18. a second seal ring; 19. a middle cover step; 20. reinforcing ribs; 21. a bearing; 22. a bearing cap; 23. and a guide block.
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 efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a bellows stop valve.
In this embodiment, referring to fig. 1 to 4, the bellows stop valve includes a driving handwheel 1, a valve rod 2, a valve cover 3, a valve body 4, a valve flap 5, a valve seat 6, a middle cover 7 fixedly connected between the valve cover and the valve body, and a bellows assembly arranged in a through hole 8 of the middle cover 7, wherein one end of the valve rod 2 is fixedly connected with the driving handwheel 1, the other end thereof penetrates through the through holes 8 of the valve cover 3 and the middle cover and extends into a valve cavity of the valve body to be fixedly connected with the valve flap, and the bellows assembly includes a bellows disc 9; a guide piece 10; a corrugated pipe 13 sleeved on the valve rod; and the upper connecting disc 11 and the lower connecting disc 12 are fixedly connected to two ends of the corrugated pipe 13, a mounting groove 14 for mounting the wave disc is formed in the joint of the valve cover 3 and the middle cover, the guide piece 10 is fixed on the valve rod, the upper connecting disc 11 is fixed on the wave disc, and the lower connecting disc 12 is fixed on the guide piece.
Through setting up the well lid that is used for installing the bellows specially, increased the length of bellows, reduce the bellows extension pressure, improve the life of bellows, the change of the bellows of being convenient for sets up the guide vane in the bellows in addition, effectively prevents the valve rod slope, guarantees the accuracy of valve clack and disk seat seal, improves the sealing performance of valve.
The wave disc structure is characterized in that first sealing rings 15 are arranged on binding surfaces between the upper end surface of the wave disc and the valve cover and between the lower end surface of the wave disc and the middle cover, and wave disc steps 16 are arranged on the lower end surface of the wave disc 9 and the upper end surface of the middle cover, which are positioned on the inner side of the first sealing rings 15. As shown in fig. 3, the wave disc steps on the wave disc and the wave disc steps on the middle cover are mutually clamped, so that the first sealing ring can be effectively prevented from being directly washed by the medium, and the service life of the first sealing ring is prolonged.
A gap 17 is formed between the guide piece 10 and the inner wall of the through hole 8, and the linear distance of the gap 17 is 0.5-2 mm. The guide sheet has the function of guiding and blocking the medium, so that the medium is prevented from directly scouring the corrugated pipe, and the service life of the corrugated pipe is prolonged
And a second sealing ring 18 is arranged on a binding surface between the middle cover 7 and the valve body 4, and a middle cover step 19 is arranged on the lower end surface of the middle cover and the upper end surface of the valve body which are positioned at the inner side of the second sealing ring 18. As shown in figure 3, the wave disc step on the lower end face of the middle cover and the middle cover step on the upper end face of the valve body are mutually clamped, so that a medium can be effectively prevented from directly scouring the second sealing ring, and the service life of the second sealing ring is prolonged.
The section of the middle cover 7 is of an I-shaped structure, two ends of the middle cover are fixedly connected with the valve cover and the valve body respectively through bolts, and reinforcing ribs 20 are arranged on the middle cover. The provision of the reinforcing ribs 20 improves the mechanical strength of the middle cover.
The top of the valve cover is provided with a bearing 21 and a bearing cover 22. The arrangement of the bearing 21 reduces the friction force of the rotation of the valve rod, so that the opening and closing of the stop valve are more labor-saving.
The valve cover is fixed with a guide block 23 through a bolt, and the valve rod movably penetrates through a guide hole of the guide block 23. The guide block 23 plays a guiding role, further limits the path of the up-and-down action of the valve rod, ensures the accuracy of the sealing of the valve clack and the valve seat, and improves the sealing performance of the valve.
The utility model discloses a setting up the well lid that is used for installing the bellows specially, increased the length of bellows, reduce the bellows extension pressure, improve the life of bellows, the change of the bellows of being convenient for sets up the guide vane in the bellows moreover, effectively prevents the valve rod slope, guarantees valve clack and disk seat sealing's accuracy to improve the sealing performance of valve.
The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.
Claims (7)
1. The utility model provides a bellows stop valve, includes driving hand wheel, valve rod, valve gap, valve body, valve clack and disk seat, its characterized in that: the valve comprises a valve body, a valve cover, a valve rod, a valve core and a corrugated pipe assembly, wherein the valve body is provided with a through hole, the valve core is arranged in the through hole, the valve rod is fixedly connected with a valve clack, the valve core is fixedly connected with the valve core, and the valve core is fixedly connected with the valve core; a guide piece; the corrugated pipe is sleeved on the valve rod; and the upper connecting disc and the lower connecting disc are fixedly connected to the two ends of the corrugated pipe, a mounting groove for mounting the wave disc is formed in the joint of the valve cover and the middle cover, the guide piece is fixed on the valve rod, the upper connecting disc is fixed on the wave disc, and the lower connecting disc is fixed on the guide piece.
2. The bellows shut-off valve of claim 1, wherein: the wave disc is characterized in that first sealing rings are arranged on binding surfaces between the upper end surface of the wave disc and the valve cover and between the lower end surface of the wave disc and the middle cover, and wave disc steps are arranged on the lower end surface of the wave disc and the upper end surface of the middle cover which are positioned on the inner side of the first sealing rings.
3. The bellows shut-off valve of claim 1, wherein: a gap is formed between the guide sheet and the inner wall of the through hole, and the linear distance of the gap is 0.5-2 mm.
4. A bellows shut-off valve according to any one of claims 1-3, wherein: and a binding surface between the middle cover and the valve body is provided with a second sealing ring, and the lower end surface of the middle cover and the upper end surface of the valve body, which are positioned at the inner side of the second sealing ring, are provided with middle cover steps.
5. The bellows shut-off valve of claim 1, wherein: the cross section of the middle cover is of an I-shaped structure, two ends of the middle cover are fixedly connected with the valve cover and the valve body respectively through bolts, and reinforcing ribs are arranged on the middle cover.
6. The bellows shut-off valve of claim 1, wherein: the top of the valve cover is provided with a bearing and a bearing cover.
7. The bellows shut-off valve of claim 1, wherein: the valve cover is fixed with a guide block through a bolt, and the valve rod movably penetrates through a guide hole of the guide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920985883.4U CN210566269U (en) | 2019-06-27 | 2019-06-27 | Corrugated pipe stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920985883.4U CN210566269U (en) | 2019-06-27 | 2019-06-27 | Corrugated pipe stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566269U true CN210566269U (en) | 2020-05-19 |
Family
ID=70635830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920985883.4U Active CN210566269U (en) | 2019-06-27 | 2019-06-27 | Corrugated pipe stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210566269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803519A (en) * | 2021-09-24 | 2021-12-17 | 江苏圣泰阀门有限公司 | Bellows structure valve |
| CN114087420A (en) * | 2021-11-17 | 2022-02-25 | 济南新材料产业技术研究院 | Sealing structure of valve rod and valve |
-
2019
- 2019-06-27 CN CN201920985883.4U patent/CN210566269U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803519A (en) * | 2021-09-24 | 2021-12-17 | 江苏圣泰阀门有限公司 | Bellows structure valve |
| CN113803519B (en) * | 2021-09-24 | 2023-08-18 | 江苏圣泰阀门有限公司 | Corrugated pipe structure valve |
| CN114087420A (en) * | 2021-11-17 | 2022-02-25 | 济南新材料产业技术研究院 | Sealing structure of valve rod and valve |
| CN114087420B (en) * | 2021-11-17 | 2024-01-26 | 济南新材料产业技术研究院 | Sealing structure of valve rod and valve |
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