CN212775641U - Sealing device for center line butterfly valve - Google Patents
Sealing device for center line butterfly valve Download PDFInfo
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- CN212775641U CN212775641U CN202021276636.6U CN202021276636U CN212775641U CN 212775641 U CN212775641 U CN 212775641U CN 202021276636 U CN202021276636 U CN 202021276636U CN 212775641 U CN212775641 U CN 212775641U
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Abstract
The utility model discloses a sealing device for central line butterfly valve, which comprises a valve body, the vertical grafting of the upper end of valve body has last valve rod, the vertical grafting in bottom of valve body has lower valve rod, go up and connect through the valve plate between valve rod and the lower valve rod adjacent both ends, be equipped with the disk seat in the valve body, long axle sleeve has been cup jointed in the top that lies in the disk seat on going up the valve rod, connect through cup jointing the Y type rubber bearing seal on last valve rod between long axle sleeve and the disk seat, upward cup joint hole retaining ring, packing ring, axle retaining ring and stub axle sleeve from last to having cup jointed down in proper order in the position that is close to the inside upper end of valve body on the valve rod. Compared with the prior art, the utility model the advantage lie in: the sealing effect is good, and the structure is simple.
Description
Technical Field
The utility model relates to a central line butterfly valve technical field specifically indicates a sealing device for central line butterfly valve.
Background
The center line butterfly valve is a component for realizing the on-off and flow control of a pipeline system, is widely applied in various fields of petroleum, chemical industry, metallurgy, water and electricity and the like, and mainly depends on the deformation of a valve seat to carry out end diameter sealing. The sealing form of the sealing structure mostly adopts a sealing structure, and the sealing material is rubber, polytetrafluoroethylene and the like. Due to the limitation of structural characteristics, the high-temperature-resistant, high-pressure-resistant, corrosion-resistant and abrasion-resistant industries are not suitable. When the center line butterfly valve among the prior art is used, when the switching number of times is too much, cause the wearing and tearing of shaft hole position easily to lead to revealing of butterfly valve in the end footpath direction, sealed effect is not good, and seal structure is complicated moreover, and the result of use is not good.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a sealing device for central line butterfly valve that sealed effectual, simple structure.
In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a sealing device for central line butterfly valve, includes the valve body, the vertical grafting of the upper end of valve body has last valve rod, the vertical grafting in bottom of valve body has lower valve rod, go up and connect through the valve plate between the adjacent both ends of valve rod and lower valve rod, be equipped with the disk seat in the valve body, upward cup joint long axle sleeve in the top that lies in the disk seat on the valve rod, connect through cup jointing the Y type rubber bearing seal on last valve rod between long axle sleeve and the disk seat, upward cup joint hole retaining ring, packing ring, axle retaining ring and stub axle sleeve from last to down in proper order in the position that is close to the inside upper end of valve body on the valve rod.
Compared with the prior art, the utility model the advantage lie in: the utility model discloses a sealing device for center line butterfly valve adds a Y type rubber bearing seal between the major axis cover above the valve seat, when the valve shaft position wearing and tearing leak, the medium gets into the space of Y type, struts Y type rubber bearing seal with the help of medium effort, makes the medium not leak outward, has improved sealed effect; the sealing performance of the center line butterfly valve can be improved by using the Y-shaped rubber shaft seal, the structure is simple, and the use cost is reduced.
As the improvement, the O ring sleeved on the upper valve rod is arranged in the short shaft sleeve, so that the gap between the short shaft sleeve and the upper valve rod can be reduced, and the sealing effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a sealing device for a center line butterfly valve according to the present invention.
As shown in the figure: 1. the valve comprises a valve body, 2, an upper valve rod, 3, a lower valve rod, 4, a valve plate, 5, a valve seat, 6, a long shaft sleeve, 7, a Y-shaped rubber shaft seal, 8, a hole retainer ring, 9, a gasket, 10, a shaft retainer ring, 11, a short shaft sleeve, 12 and an O ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a sealing device for central line butterfly valve, includes valve body 1, the vertical grafting of upper end of valve body 1 has last valve rod 2, the vertical grafting of bottom of valve body 1 has lower valve rod 3, go up and connect through valve plate 4 between the adjacent both ends of valve rod 2 and lower valve rod 3, be equipped with disk seat 5 in the valve body 1, go up and cup jointed long axle sleeve 6 in the top that lies in disk seat 5 on the valve rod 2, connect through cup jointing the Y type rubber bearing seal 7 on last valve rod 2 between long axle sleeve 6 and the disk seat 5, go up and cup jointed retaining ring 8 for the hole, packing ring 9, axle retaining ring 10 and stub axle sleeve 11 from last to down in proper order in the position that is close to the inside upper end of valve body 1 on the valve rod 2.
An O-ring 12 sleeved on the upper valve rod 2 is arranged in the short shaft sleeve 11.
The utility model discloses when concrete implementation, combine figure 1 a sealing device for central line butterfly valve's schematic structure diagram can know, the utility model discloses a sealing device for central line butterfly valve is when using, easy operation not only, labour saving and time saving, this sealing device simple structure moreover, low in production cost has improved the result of use. After the center line butterfly valve is used for a period of time, when the valve shaft is worn and leaked, the medium enters the Y-shaped space and props up the Y-shaped rubber shaft seal 7 by means of the acting force of the medium, so that the medium is prevented from leaking, and the sealing effect is improved. The sealing device for the center line butterfly valve has the advantages of good sealing effect and simple structure.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (2)
1. The utility model provides a sealing device for central line butterfly valve, includes valve body (1), its characterized in that: the upper end of the valve body (1) is vertically spliced with an upper valve rod (2), the bottom of the valve body (1) is vertically spliced with a lower valve rod (3), the upper valve rod (2) and the two adjacent ends of the lower valve rod (3) are connected through a valve plate (4), a valve seat (5) is arranged in the valve body (1), a long shaft sleeve (6) is sleeved on the upper portion of the valve seat (5) on the upper valve rod (2), the long shaft sleeve (6) and the valve seat (5) are connected through a Y-shaped rubber shaft seal (7) sleeved on the upper valve rod (2), and a hole check ring (8), a gasket (9), a shaft check ring (10) and a short shaft sleeve (11) are sequentially sleeved on the upper end portion close to the inner portion of the valve body (1) from top to bottom.
2. The sealing device for a center line butterfly valve according to claim 1, wherein: an O ring (12) sleeved on the upper valve rod (2) is arranged in the short shaft sleeve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021276636.6U CN212775641U (en) | 2020-07-01 | 2020-07-01 | Sealing device for center line butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021276636.6U CN212775641U (en) | 2020-07-01 | 2020-07-01 | Sealing device for center line butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775641U true CN212775641U (en) | 2021-03-23 |
Family
ID=75085478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021276636.6U Active CN212775641U (en) | 2020-07-01 | 2020-07-01 | Sealing device for center line butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775641U (en) |
-
2020
- 2020-07-01 CN CN202021276636.6U patent/CN212775641U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |