CN217328475U - Enhanced sealing packing structure of valve body - Google Patents
Enhanced sealing packing structure of valve body Download PDFInfo
- Publication number
- CN217328475U CN217328475U CN202220213658.0U CN202220213658U CN217328475U CN 217328475 U CN217328475 U CN 217328475U CN 202220213658 U CN202220213658 U CN 202220213658U CN 217328475 U CN217328475 U CN 217328475U
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- packing
- valve
- valve rod
- valve body
- graphite
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Abstract
The utility model belongs to the technical field of the valve technique and specifically relates to an enhancement mode sealing filler structure of valve body. The utility model provides an enhancement mode packing structure that seals of valve body, includes valve rod, valve gap, its characterized in that: the valve cover in be equipped with the valve rod, be equipped with the packing box between valve rod and the valve cover, the laminating valve rod of packing box inner wall is for the slope setting between packing box outer wall and the valve rod. Compared with the prior art, through setting up the stuffing box outer wall with the slope of valve rod, reduce the required pretightning force of gland department, reduce the loss to the valve body part, improve sealing performance.
Description
Technical Field
The utility model belongs to the technical field of the valve technique and specifically relates to an enhancement mode sealing filler structure of valve body.
Background
In order to ensure the safety of the valve body, the leakage requirement at the valve rod is more and more strict, and the packing seal is the most main sealing mode of the valve cover and the valve rod. In present valve body, packing box outer wall and valve rod are parallel arrangement, in order to guarantee the sealed of valve rod packing, will exert great pretightning force to the packing, can produce certain loss to the valve body part like this, are unfavorable for satisfying the sealing performance of valve body.
Disclosure of Invention
The utility model discloses an overcome prior art not enough, provide an enhancement mode sealing packing structure of valve body, through setting up the stuffing box outer wall with the valve rod slope, reduce gland department required pretightning force, reduce the loss to the valve body part, improve sealing performance.
In order to realize above-mentioned purpose, design the sealed filler structure of enhancement mode of valve body, including valve rod, valve gap, its characterized in that: the valve cover in be equipped with the valve rod, be equipped with the packing box between valve rod and the valve cover, the laminating valve rod of packing box inner wall is for the slope setting between packing box outer wall and the valve rod.
The inclination angle between the outer wall of the stuffing box and the valve rod is 2 degrees.
The stuffing box is internally provided with a guide sleeve, a first stuffing part, a bushing, a second stuffing part and a stuffing gland from bottom to top respectively, and the upper end of the stuffing gland penetrates through the valve cover and is connected with the pressing plate.
The clamp is connected with the pressing plate through bolts.
The first filling part comprises a graphite filling material, an anti-extrusion ring, a first graphite woven filling material and a second graphite woven filling material, the first graphite woven filling material, the second graphite woven filling material and the graphite woven filling material are respectively arranged above the guide sleeve, and the anti-extrusion ring is respectively arranged between the graphite filling material and the first graphite woven filling material and between the graphite filling material and the second graphite woven filling material.
The structure of the second packing part is the same as that of the first packing part.
The valve cover is provided with a grease injection hole which extends into the stuffing box.
Compared with the prior art, the utility model, through setting up the packing box outer wall with the valve rod slope, reduce the required pretightning force of gland department, reduce the loss to the valve body part, improve sealing performance.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a partial enlarged view of the stuffing box of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 2, a valve rod 2 is arranged in a valve cover 1, a stuffing box is arranged between the valve rod 2 and the valve cover 1, the inner wall of the stuffing box is attached to the valve rod 2, and the outer wall of the stuffing box and the valve rod 2 are obliquely arranged.
As shown in fig. 1, the angle of inclination between the stuffing box outer wall and the valve stem 2 is α. When the valve rod is used specifically, the inclination angle between the outer wall of the stuffing box and the valve rod 2 can be set to be 2 degrees.
The stuffing box is internally provided with a guide sleeve 3, a first stuffing part 4, a bushing 5, a second stuffing part 6 and a stuffing gland 7 from bottom to top respectively, and the upper end of the stuffing gland 7 penetrates through the valve cover 1 and is connected with a pressure plate 8.
The pressure plate 8 is connected to the clamp 10 by bolts 9. In particular, the band 10 is fixed to the valve actuator.
The first filling part 4 comprises a graphite filling 4-1, an anti-extrusion ring 4-2, a graphite woven filling one 4-3 and a graphite woven filling two 4-4, the graphite woven filling one 4-3, the graphite filling 4-1 and the graphite woven filling two 4-4 are respectively arranged above the guide sleeve 3, and the anti-extrusion ring 4-2 is respectively arranged between the graphite filling 4-1 and the graphite woven filling one 4-3 and between the graphite woven filling two 4-4. The extrusion-proof ring 4-2 is a procurement piece for preventing the filler from being extruded out of the filler area.
The structure of packing section two 6 is the same as that of packing section one 4.
The valve cover 1 is provided with a grease injection hole 11, and the grease injection hole 11 extends into the stuffing box. When the valve body is used specifically, grease can be injected through the grease injection hole 11, the packing part is lubricated at any time, and the valve body keeps good sealing performance for a long time.
The utility model discloses during the use, apply pressure to 8 departments of clamp plate to press down the stuffing box inner part, compress packing portion. Because there is 2 inclination between stuffing box outer wall and the valve rod 2, the stuffing box inner part produces the transverse force, guarantees to laminate more between stuffing box inner wall and the valve rod 2, laminates more between stuffing box outer wall and the valve gap 1, and sealing performance is better. After the pressing is finished, the pressing plate 8 is connected with the valve cover 1 through the bolt 9, and the installation of the stuffing box is finished.
Claims (7)
1. The utility model provides an enhancement mode packing structure of valve body, includes valve rod, valve gap, its characterized in that: valve gap (1) in be equipped with valve rod (2), be equipped with the packing box between valve rod (2) and valve gap (1), packing box inner wall laminating valve rod (2), for the slope setting between packing box outer wall and valve rod (2).
2. An enhanced packing structure of a valve body according to claim 1, wherein: the inclination angle between the outer wall of the stuffing box and the valve rod (2) is 2 degrees.
3. An enhanced packing structure of a valve body according to claim 1, wherein: the stuffing box is internally provided with a guide sleeve (3), a first stuffing part (4), a bushing (5), a second stuffing part (6) and a gland (7) from bottom to top respectively, and the upper end of the gland (7) penetrates through the valve cover (1) and is connected with a pressing plate (8).
4. An enhanced packing structure of a valve body according to claim 3, wherein: the clamp (10) is connected with the pressure plate (8) through a bolt (9).
5. An enhanced packing structure of a valve body according to claim 3, wherein: the first packing part (4) comprises a graphite packing (4-1), an anti-extrusion ring (4-2), a first graphite woven packing (4-3) and a second graphite woven packing (4-4), the first graphite woven packing (4-3), the graphite packing (4-1) and the second graphite woven packing (4-4) are respectively arranged above the guide sleeve (3), and the anti-extrusion ring (4-2) is respectively arranged between the graphite packing (4-1) and the first graphite woven packing (4-3) as well as between the graphite woven packing (4-4).
6. An enhanced packing structure of a valve body according to claim 3, wherein: the structure of the second packing part (6) is the same as that of the first packing part (4).
7. An enhanced packing structure of a valve body according to claim 1, wherein: the valve cover (1) is provided with a grease injection hole (11), and the grease injection hole (11) extends into the stuffing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220213658.0U CN217328475U (en) | 2022-01-26 | 2022-01-26 | Enhanced sealing packing structure of valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220213658.0U CN217328475U (en) | 2022-01-26 | 2022-01-26 | Enhanced sealing packing structure of valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217328475U true CN217328475U (en) | 2022-08-30 |
Family
ID=82994893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220213658.0U Active CN217328475U (en) | 2022-01-26 | 2022-01-26 | Enhanced sealing packing structure of valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217328475U (en) |
-
2022
- 2022-01-26 CN CN202220213658.0U patent/CN217328475U/en active Active
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