CN211715899U - High-frequency operation ball valve rod sealing structure - Google Patents
High-frequency operation ball valve rod sealing structure Download PDFInfo
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- CN211715899U CN211715899U CN201922022292.XU CN201922022292U CN211715899U CN 211715899 U CN211715899 U CN 211715899U CN 201922022292 U CN201922022292 U CN 201922022292U CN 211715899 U CN211715899 U CN 211715899U
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- valve rod
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- seal structure
- thrust pad
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Abstract
The utility model belongs to the technical field of the mechanical skill and specifically relates to a high frequency operation ball valve rod seal structure, which comprises a valve rod, right valve body, compound axle sleeve, the shaping is packed, the gland, the fastener, the dish spring, the clamp plate, the valve internal pressure assists valve rod seal structure, compound axle sleeve cover is established at the middle part of valve rod, be equipped with the shaping packing between valve rod and the right valve body, the top of gland embedding right valve body covers in the top that the shaping was packed, the clamp plate adopts the fastener to fix on right valve body, be provided with the dish spring on the fastener, the top of gland is supported to the bottom of clamp plate, be equipped with the supplementary valve rod seal structure of valve internal pressure on the ladder bench of valve. Compared with the prior art, the utility model, sealing performance between valve rod and the valve body has been improved. When the molding filler is worn, the disc spring rebounds to compensate, the joint and sealing force of the sealing part are kept, and the service life of the ball valve is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the mechanical skill and specifically relates to a high frequency operation ball valve rod seal structure.
Background
After the ball valve stem is operated at high frequency, the situation of abrasion of a sealing element can occur, so that the sealing performance between the valve stem and the valve body is poor, and the use of the ball valve is influenced.
Therefore, a sealing structure for a valve rod of a high-frequency operation ball valve needs to be designed to improve the sealing performance between the valve rod and a valve body and prolong the service life of the ball valve.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, provide a high frequency operation ball valve rod seal structure to improve the sealing performance between valve rod and the valve body, prolong the life of ball valve.
In order to achieve the purpose, the utility model relates to a high frequency operation ball valve rod seal structure, including valve rod, right valve body, compound axle sleeve, shaping filler, gland, fastener, dish spring, clamp plate, the supplementary valve rod seal structure of valve internal pressure, in the valve rod inserts right valve body, the bottom and the centre of sphere of valve rod are connected, its characterized in that: the composite shaft sleeve is sleeved in the middle of the valve rod, forming filler is arranged between the valve rod and the right valve body, the gland is embedded into the top of the right valve body and covers the upper portion of the forming filler, the pressing plate is fixed on the right valve body through a fastening piece, a disc spring is arranged on the fastening piece, the bottom of the pressing plate supports against the top of the gland, an in-valve pressure auxiliary valve rod sealing structure is arranged on a step platform of the valve rod, and the in-valve pressure auxiliary valve rod sealing structure is located between the valve.
The valve rod sealing structure is assisted to valve internal pressure include top thrust pad, central load ring, lower thrust pad, top thrust pad, central load ring, lower thrust pad from last to down establish in proper order on the valve rod, the top and the right valve body contact of top thrust pad, the bottom and the valve rod contact of lower thrust pad.
The bottom surface of the upper thrust pad is provided with a conical surface groove, the upper surface of the central load ring is provided with a conical surface boss, and the conical surface boss is matched with the conical surface groove.
And a left valve body is arranged on the left side of the right valve body.
The fastener is a bolt.
Compared with the prior art, the utility model, designed high frequency operation ball valve rod seal structure, formed the seal structure of valve rod, shaping filler and right valve body to adopt the valve internal pressure to assist valve rod seal structure, improved the sealing performance between valve rod and the valve body. When the molding filler is worn, the disc spring rebounds to compensate, the joint and sealing force of the sealing part are kept, and the service life of the ball valve is prolonged.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1 according to the present invention.
Fig. 3 is an enlarged view of the point B of fig. 2 according to the present invention.
Fig. 4 is an enlarged view of fig. 2C according to the present invention.
Fig. 5 is an enlarged view of fig. 2 according to the present invention at D.
Fig. 6 is an enlarged view of fig. 2 at E.
Fig. 7 is an enlarged view of fig. 2 at F according to the present invention.
Fig. 8 is an enlarged view of fig. 2 at G according to the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1, the utility model relates to a high frequency operation ball valve rod seal structure, which comprises a valve rod, the right valve body, compound axle sleeve, the shaping is packed, the gland, the fastener, the dish spring, the clamp plate, valve internal pressure assists valve rod seal structure, the left side of right valve body 2 is equipped with left valve body 1, valve rod 6 inserts in the right valve body 2, the bottom and the centre of sphere 13 of valve rod 6 are connected, 3 covers of compound axle sleeve are established at the middle part of valve rod 6, be equipped with shaping filler 4 between valve rod 6 and the right valve body 2, the top of gland 5 embedding right valve body 2 covers in shaping filler 4's top, clamp plate 9 adopts fastener 7 to fix on right valve body 2, be provided with dish spring 8. The bottom of the pressure plate 9 props against the top of the gland 5, a step platform of the valve rod 6 is provided with an auxiliary valve rod sealing structure in the valve, and the auxiliary valve rod sealing structure in the valve is positioned between the valve rod 6 and the right valve body 2.
Referring to fig. 2, the valve internal pressure auxiliary valve rod sealing structure includes an upper thrust pad 10, a central load ring 11, and a lower thrust pad 12, the upper thrust pad 10, the central load ring 11, and the lower thrust pad 12 are sequentially sleeved on the valve rod 6 from top to bottom, the top of the upper thrust pad 10 contacts with the right valve body 2, and the bottom of the lower thrust pad 12 contacts with the valve rod 6. The bottom surface of the upper thrust pad 10 is provided with a conical surface groove, the upper surface of the central load ring 11 is provided with a conical surface boss, and the conical surface boss is matched with the conical surface groove.
In the utility model discloses in, compound axle sleeve 3 is that polytetrafluoroethylene and stainless steel are compound to form, and the shaping is packed 4 and is the shaping filler of V type polytetrafluoroethylene, and fastener 7 is the bolt, goes up thrust pad 10 and is the polytetrafluoroethylene gasket, and central load ring 11 is the stainless steel ring, and lower thrust pad 12 is the compound flat pad of polytetrafluoroethylene and stainless steel.
The utility model discloses the during operation, fastener 7's early warning power is through dish spring 8, clamp plate 9, and on shaping filler 4 was used to gland 5, the seal structure of valve rod 6, shaping filler 4 and right valve body 2 was formed. When the molding filler 4 is worn, the disc spring 8 rebounds to compensate, and the joint and sealing force of the sealing part is kept, so that the service life of the ball valve is prolonged.
Referring to fig. 2, the arrows on the drawing are the stress directions of the upper thrust pad 10 and the lower thrust pad 12, the ball center 13 inside the valve generates an upward acting force on the valve rod 6, the valve rod 6 is pushed upward to press the lower thrust pad 12, the force is transmitted in sequence, and the force acts on the right valve body 2 through the central load ring 11 and the upper thrust pad 10.
After the upper thrust pad 10 and the lower thrust pad 12 are pressed by the shoulder of the valve rod 6, for structural reasons, as shown in fig. 3 and 7, the outer side of the lower part of the upper thrust pad 10 is respectively squeezed between the right valve body 2 and the central load ring 11 and between the valve rod 6 and the central load ring 11; as shown in fig. 6, the upper outer side of the upper thrust pad 10 will be squeezed between the right valve body 2 and the valve stem 6; as shown in fig. 4 and 8, the upper outer side of the lower thrust pad 12 will be squeezed between the right valve body 2 and the central load ring 11, and between the valve rod 6 and the central load ring 11, respectively; as shown in fig. 5, the lower outer side of the lower thrust pad 12 will be squeezed between the right valve body 2 and the valve rod 6, further improving the sealing performance between the valve body 2 and the valve rod 6.
Claims (5)
1. The utility model provides a high frequency operation ball valve rod seal structure, includes valve rod, right valve body, compound axle sleeve, shaping filler, gland, fastener, dish spring, clamp plate, the supplementary valve rod seal structure of valve internal pressure, and in valve rod (6) inserted right valve body (2), the bottom and the centre of sphere (13) of valve rod (6) were connected its characterized in that: the middle part in valve rod (6) is established to compound axle sleeve (3) cover, be equipped with shaping filler (4) between valve rod (6) and right valve body (2), gland (5) embedding right valve body's (2) top and cover are on the top of shaping filler (4), clamp plate (9) adopt fastener (7) to fix on right valve body (2), be provided with dish spring (8) on fastener (7), the bottom of clamp plate (9) supports the top of gland (5), be equipped with the supplementary valve rod seal structure of valve internal pressure on the ladder bench of valve rod (6), the supplementary valve rod seal structure of valve internal pressure is located between valve rod (6) and right valve body (2).
2. A high frequency operation ball valve stem seal structure according to claim 1, wherein: the valve rod sealing structure is assisted to valve internal pressure include and go up thrust pad (10), central load ring (11), thrust pad (12) down, go up thrust pad (10), central load ring (11), thrust pad (12) are from last to overlapping in proper order down on valve rod (6), the top and the right valve body (2) contact of going up thrust pad (10), the bottom and valve rod (6) contact of thrust pad (12) down.
3. A high frequency operation ball valve stem seal structure according to claim 2, wherein: the bottom surface of the upper thrust pad (10) is provided with a conical surface groove, the upper surface of the central load ring (11) is provided with a conical surface boss, and the conical surface boss is matched with the conical surface groove.
4. A high frequency operation ball valve stem seal structure according to claim 1, wherein: the left side of the right valve body (2) is provided with a left valve body (1).
5. A high frequency operation ball valve stem seal structure according to claim 1, wherein: the fastener (7) is a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022292.XU CN211715899U (en) | 2019-11-21 | 2019-11-21 | High-frequency operation ball valve rod sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022292.XU CN211715899U (en) | 2019-11-21 | 2019-11-21 | High-frequency operation ball valve rod sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715899U true CN211715899U (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922022292.XU Active CN211715899U (en) | 2019-11-21 | 2019-11-21 | High-frequency operation ball valve rod sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211715899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294437A (en) * | 2021-12-28 | 2022-04-08 | 中石化江钻石油机械有限公司 | Ball valve sealing structure |
-
2019
- 2019-11-21 CN CN201922022292.XU patent/CN211715899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294437A (en) * | 2021-12-28 | 2022-04-08 | 中石化江钻石油机械有限公司 | Ball valve sealing structure |
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