CN210372278U - Floating ball valve seal structure - Google Patents
Floating ball valve seal structure Download PDFInfo
- Publication number
- CN210372278U CN210372278U CN201921305586.7U CN201921305586U CN210372278U CN 210372278 U CN210372278 U CN 210372278U CN 201921305586 U CN201921305586 U CN 201921305586U CN 210372278 U CN210372278 U CN 210372278U
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- packing
- top cap
- valve rod
- floating ball
- filler
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Abstract
The utility model discloses a floating ball valve seal structure for sealed disk seat and valve rod, including first filler, the top cap, the second is packed, packing clamp plate and adjusting screw, the valve rod hole has on the disk seat, the downthehole internal rotation of valve rod is connected with the valve rod, the holding chamber has between valve rod hole and valve rod, the holding intracavity is filled with first filler, the oral area in holding chamber sets up the top cap, the chamber of packing has on the top cap, the second filler is filled to the chamber of packing, be provided with packing clamp plate on the chamber of packing, threaded connection has adjusting screw between packing clamp plate and disk seat, and adjusting screw passes the top cap. The up end and the lower terminal surface of top cap all have the filler, and the top cap floats and sets up on adjusting screw, and in addition, top cap and first packing are provided with wave spring within a definite time, can automatically regulated pack and the pressure within a definite time of top cap, ensure that well is sealed between valve rod and disk seat.
Description
Technical Field
The utility model relates to a ball valve technical field particularly, relates to a floating ball valve seal structure.
Background
The valve rod sealing design of the traditional industrial floating ball valve generally adopts a pressure plate to directly adjust the compression amount of valve rod packing to control the leakage of the valve rod, so that the no-load of the valve rod is easily larger, and the sealing failure of the valve rod is easily caused; meanwhile, the change of the pressure in the valve body needs to adjust the adjusting screw rod all the time, and the operation is troublesome.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent.
The utility model provides a pair of floating ball valve seal structure can the compression capacity of automatically regulated packing.
In view of this, the utility model provides a floating ball valve seal structure for seal disk seat and valve rod, its characterized in that, including first filler, top cap, second filler, packing clamp plate and adjusting screw, the disk seat has the valve rod hole, the downthehole internal rotation of valve rod is connected with the valve rod, the valve rod hole with the valve rod has the holding chamber within a definite time, the holding intracavity is filled with first filler, the oral area in holding chamber sets up the top cap, the packing chamber has on the top cap, the packing intracavity is filled the second filler, be provided with on the packing chamber the packing clamp plate, threaded connection has between packing clamp plate and the disk seat adjusting screw to adjusting screw passes the top cap.
Further, still including wave spring, wave spring wear to set up on the valve rod to set up between first filler and the top cap.
Further, the valve rod is provided with a first shaft shoulder and a second shaft shoulder along the inside of the valve seat to the outside, a shoulder is arranged in the valve rod hole, the shoulder abuts against the first shaft shoulder to form the accommodating cavity, the second shaft shoulder is provided with the top cover, an annular bulge is arranged on the top cover and accommodated in the accommodating cavity, and a bearing is arranged between the second shaft shoulder and the top cover.
Further, the packing pressing plate is provided with a circular ring groove, a sealing ring is arranged in the circular ring groove, and the sealing ring is abutted to the valve rod.
Further, the packing device also comprises a sealing gasket, and the sealing gasket is arranged between the packing pressing plate and the top cover.
Furthermore, the top cover is provided with an unthreaded hole along the axial direction of the valve rod, and the adjusting screw penetrates through the unthreaded hole.
Further, the first filler is a V-shaped filler, and the second filler is a fireproof filler.
Further, the adjusting screws are multiple, and the adjusting screws are symmetrically distributed on the packing pressure plate.
The technical effects of the utility model reside in that: the utility model provides a pair of floating ball valve seal structure for sealing between disk seat and valve rod, including first filler, the top cap, the second is packed, clamp plate and adjusting screw, the valve rod hole has on the disk seat, the downthehole internal rotation of valve rod is connected with the valve rod, the holding chamber has between valve rod hole and valve rod, the holding intracavity is filled with first filler, the oral area in holding chamber sets up the top cap, the chamber of packing has on the top cap, the second filler is loaded to the chamber of packing, be provided with clamp plate on the chamber of packing, threaded connection has adjusting screw between clamp plate and disk seat, and adjusting screw passes the top cap. The up end and the lower terminal surface of top cap all have the filler, and the top cap floats and sets up on adjusting screw, and in addition, top cap and first packing are provided with wave spring within a definite time, can automatically regulated pack and the pressure within a definite time of top cap, ensure that well is sealed between valve rod and disk seat.
Drawings
FIG. 1 is a three-dimensional structural view of a floating ball valve sealing structure according to the present invention;
FIG. 2 is a partial cross-sectional view of a floating ball valve sealing structure according to the present invention;
fig. 3 is a cross-sectional view a-a of a floating ball valve sealing structure according to the present invention.
Wherein, 1-valve seat; 2-a valve stem; 3-a first filler; 4-a top cover; 5-a second filler; 6-packing press plate; 7-adjusting screws; 8-shoulder; 9-a bearing; 10-wave spring; 11-a sealing ring; 12-a sealing gasket.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
According to the utility model discloses a specific embodiment, the utility model provides a pair of floating ball valve seal structure, by figure 1, figure 2 and figure 3 are shown, including disk seat 1, valve rod 2, first filler 3, top cap 4, the second packs 5, packing clamp plate 6 and adjusting screw 7, valve rod 2 hole has on the disk seat 1, 2 downthehole rotations of valve rod are connected with valve rod 2, the holding chamber has between 2 hole of valve rod and valve rod 2, the holding intracavity is filled with first filler 3, the oral area in holding chamber sets up top cap 4, the chamber of packing has on the top cap 4, the second filler 5 is filled to the packing intracavity, be provided with packing clamp plate 6 on the chamber of packing, threaded connection has adjusting screw 7 between packing clamp plate 6 and disk seat 1 to adjusting screw 7 passes top cap 4. The top cover 4 is arranged on the adjusting screw 7 in a penetrating mode, floats between the first packing 3 and the packing pressing plate 6, the adjusting screw 7 is screwed, the first packing 3 and the second packing 5 can be tightened, and the sealing performance is better.
According to the utility model discloses a specific embodiment, the utility model provides a pair of floating ball valve seal structure, still including wave spring 10, wave spring 10 wears to establish on valve rod 2 to the setting is between first filler 3 and top cap 4. The spring can automatically adjust the pressure between the first filler 3 and the top cover 4, and when the pressure in the valve body changes, the adjusting screw 7 does not need to be adjusted frequently, so that the valve is more convenient and durable.
According to the utility model discloses a specific embodiment, the utility model provides a pair of floating ball valve seal structure, shown by figure 1, figure 2 and figure 3, valve rod 2 is equipped with first shoulder and second shoulder to the outside along 1 inside of disk seat, and 2 downthehole shoulders 8 that have of valve rod, and shoulders 8 offsets with first shoulder and form the holding chamber, and second shoulder department sets up top cap 4, and it is protruding to have the annular on top cap 4, and the protruding holding of annular is in the holding intracavity to be provided with bearing 9 between second shoulder and top cap 4. The shaft shoulder and the shoulder 8 are arranged, so that the sealing performance is better. The packing pressing plate 6 is provided with a circular ring groove, a sealing ring 11 is arranged in the circular ring groove, and the sealing ring 11 is abutted to the valve rod 2. And a sealing gasket 12, wherein the sealing gasket 12 is arranged between the packing pressing plate 6 and the top cover 4. The sealing performance is further improved.
According to the utility model discloses a specific embodiment, the utility model provides a pair of floating ball valve seal structure, it is shown by figure 1, figure 2 and figure 3, set up on top cap 4 along 2 axial unthreaded holes of valve rod, adjusting screw 7 follows pass in the unthreaded hole, can guarantee that top cap 4 floats and sets up for top cap 4 adjusts the degree of packing compactedness more smoothly.
According to the utility model discloses a specific embodiment, the utility model provides a pair of floating ball valve seal structure, by figure 1, figure 2 and figure 3 show, first filler 3 is the V-arrangement filler, and the second filler 5 is the fire prevention filler. The adjusting screw 7 is provided in plurality, and the plurality of adjusting screws 7 are symmetrically distributed on the packing press plate 6. The filler pressing plate 6 is uniformly stressed.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. The utility model provides a floating ball valve seal structure for sealed disk seat and valve rod, its characterized in that, includes first filler, top cap, second filler, packing clamp plate and adjusting screw, the disk seat has the valve rod hole, valve rod downthehole internal rotation is connected with the valve rod, the valve rod hole with the holding chamber has between the valve rod, the holding intracavity is filled with first filler, the oral area in holding chamber sets up the top cap, the packing chamber has on the top cap, the packing intracavity is filled the second filler, be provided with on the packing chamber the packing clamp plate, the packing clamp plate with threaded connection has between the disk seat adjusting screw, and adjusting screw passes the top cap.
2. A floating ball valve seal according to claim 1 and further comprising a wave spring disposed through said valve stem and between said first packing and said top cover.
3. A floating ball valve seal according to claim 1 wherein said valve stem has a first shoulder and a second shoulder disposed outwardly along the interior of said valve seat, said valve stem bore having a shoulder therein, said shoulder abutting said first shoulder and defining said receiving cavity, said second shoulder having said top cap disposed thereon, said top cap having an annular projection received in said receiving cavity, and a bearing disposed between said second shoulder and said top cap.
4. A floating ball valve seal according to claim 1, wherein said packing pressure plate has a circular groove therein, and a seal ring is disposed in said circular groove, said seal ring abutting said valve stem.
5. A floating ball valve seal arrangement according to claim 1, further including a gasket seal disposed between said packing press plate and said top cover.
6. A floating ball valve seal according to claim 1, wherein said top cover defines an aperture extending axially along said stem, said adjustment screw passing through said aperture.
7. A floating ball valve seal according to claim 1 wherein said first packing is a V-shaped packing and said second packing is a fire-resistant packing.
8. A floating ball valve seal according to claim 1, wherein said set screw is plural and said plurality of set screws are symmetrically distributed on said packing press plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921305586.7U CN210372278U (en) | 2019-08-12 | 2019-08-12 | Floating ball valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921305586.7U CN210372278U (en) | 2019-08-12 | 2019-08-12 | Floating ball valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210372278U true CN210372278U (en) | 2020-04-21 |
Family
ID=70250336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921305586.7U Active CN210372278U (en) | 2019-08-12 | 2019-08-12 | Floating ball valve seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210372278U (en) |
-
2019
- 2019-08-12 CN CN201921305586.7U patent/CN210372278U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |