CN211693607U - Nut type ball valve without disc spring packing system - Google Patents
Nut type ball valve without disc spring packing system Download PDFInfo
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- CN211693607U CN211693607U CN201922190973.7U CN201922190973U CN211693607U CN 211693607 U CN211693607 U CN 211693607U CN 201922190973 U CN201922190973 U CN 201922190973U CN 211693607 U CN211693607 U CN 211693607U
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Abstract
The utility model discloses a nut formula does not have dish spring filler system ball valve relates to valve technical field, including valve body, valve gap, case ball and valve rod, the valve body with valve gap fixed connection constitutes and is used for placing the valve body chamber of case ball, the valve rod with case ball fixed connection, the upper end of valve rod is connected with handle bar, its characterized in that: the valve rod with the junction of valve body is from up being equipped with first filler, second filler, clamping ring, third filler and gland nut down in proper order. The utility model discloses be equipped with the nut in the top of packing, when wearing and tearing appear in the packing, adjust gland nut and can realize compensating sealedly, play and delay the effect that the tight power of packing descends, realized the sealed that the ball valve lasts.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to nut formula does not have dish spring filler system ball valve.
Background
Ball valve, the open-close piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The ball valve can also be used for regulating and controlling fluid, and is widely applied to the fields of petroleum, chemical engineering, metallurgy, light spinning, food, atomic energy, aviation and the like because the ball valve has a simple structure, reliable sealing and convenient maintenance, and a sealing surface and a ball body are always in a closed state and are not easily eroded by a medium.
The packing is widely used for sealing between the valve rod and the valve body of the ball valve, the packing is continuously abraded along with the opening and closing of the valve, meanwhile, the packing is continuously aged or abraded along with the increase of the service time, the factors can cause the reduction of the packing sealing pretightening force and finally cause leakage, and the installation of the valve disc spring plays a role in delaying the reduction of the packing sealing pretightening force to realize continuous sealing. However, in an application environment of a ball valve with high pressure, the filler bears higher pressure and is more easily abraded, and the common pressing plate type structure is easy to have the problem of poor sealing, and the service life of the whole ball valve is also influenced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a nut formula does not have dish spring system ball valve that packs solves the ball valve of current clamp plate formula structure and easily appears sealed not tight and then influence ball valve life's problem.
(II) technical scheme
In order to solve the technical problem, the utility model provides a technical scheme does:
the utility model provides a nut formula packing system ball valve, includes valve body, valve gap, case ball and valve rod, the valve body with valve gap fixed connection constitutes and is used for placing the valve body chamber of case ball, the valve rod with case ball fixed connection, the upper end of valve rod is connected with the handle bar, the valve rod with up first filler, second filler, clamping ring, third filler and gland nut are equipped with from down to the junction of valve body in proper order.
Preferably, the first filler is integrally formed by a horizontal ring body and a vertical wedge-shaped ring body, and the outer side surface of the vertical wedge-shaped ring body is a wedge-shaped side surface with an upward tip.
Preferably, the second filler is sleeved outside the vertical wedge-shaped ring body, the inner side surface of the second filler is a wedge-shaped ring side surface with a downward pointed end, and the wedge-shaped inner side surface of the second filler is matched with the outer side surface of the vertical wedge-shaped ring body; the upper surface of the second filler is slightly higher than the upper surface of the vertical wedge-shaped annular ring body.
Wherein, preferably, the first filler is a PTFE filler.
Wherein, preferably, the second filler and the third filler are graphite fillers, respectively.
Preferably, a bushing is embedded in an inner side surface of the compression nut.
Wherein, preferably, be equipped with thrust pad between the bottom of valve rod and the valve body.
(III) advantageous effects
The technical scheme provided by the utility model, compared with prior art, following beneficial effect has:
the utility model discloses the nut is equipped with in the top of packing, when wearing and tearing appear in the packing, adjusts gland nut and can realize compensating sealedly, plays the effect that delays the tight power decline of packing seal, has realized the sealed that the ball valve lasts to, compare with the seal structure who installs the butterfly valve additional now, ball valve life obtains effectual extension.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other embodiments can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic structural view of a middle nut type ball valve without a disc spring packing system of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1. the valve comprises a valve body, 2 parts of a valve cover, 3 parts of a valve core ball, 4 parts of a valve rod, 5 parts of a supporting convex ring, 6 parts of a valve core cavity, 7 parts of a handle rod, 8 parts of a first packing, 8-1 parts of a horizontal ring body, 8-2 parts of a vertical wedge-shaped ring body, 9 parts of a second packing, 10 parts of a pressing ring 10, 11 parts of a third packing, 12 parts of a compression nut, 13 parts of a lining, 14 parts of a thrust pad, 15 parts of a first sealing gasket, 16 parts of a second sealing gasket
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to specific embodiments of the present invention, and it should be understood 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 work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment provides a nut type ball valve without disc spring packing system, which comprises a valve body 1, a valve cover 2, a valve core ball 3 and a valve rod 4, wherein the valve body 1 and the valve cover 2 are fixedly connected and form a valve body cavity 6 for placing the valve core ball 3, the valve rod 4 is connected with the valve core ball 3 through a flat shaft flat groove, the upper end of the valve rod 4 is connected with a handle rod 7, and the joint of the valve rod 4 and the valve body 1 is sequentially provided with a first packing 8, a second packing 9, a pressure ring 10, a third packing 11 and a compression nut 12 from bottom to top. Gland nut 12 establishes in the third top of packing 11, when packing wearing and tearing appear, adjusts gland nut 12 and can realize compensating sealed, plays the effect that delays the tight power decline of packing seal, has realized the sealed that the ball valve lasts to, compare with the seal structure who installs the dish spring additional now, ball valve life obtains effectual extension.
The first filler is integrally formed by a horizontal ring body and a vertical wedge-shaped ring body, and the outer side surface of the vertical wedge-shaped ring body is a wedge-shaped side surface with an upward tip end. The second filler 9 is sleeved outside the wedge-shaped excircle of the first filler, the inner side surface of the second filler 9 is a wedge-shaped side surface with a downward tip, and the inner side surface of the second filler 9 is in wedge-shaped fit with the outer side surface of the first filler; in the design of the packing system, the wedge-shaped packing and the wedge-shaped inclined plane are designed, so that radial component force can be generated when the packing is pressed downwards, and the radial sealing effect is further improved. And, the upper surface of second filler 9 is slightly higher than the upper surface of first filler, and adjusting gland nut 12 can play effectual pushing down effect when wearing and tearing.
Wherein, the first filler 8 is PTFE filler, and the second filler 9 and the third filler 11 are graphite fillers respectively. PTFE and graphite double packing and other sealing designs of the valve body 1 have the fireproof function. When the inner PTFE (first filler 8) is burnt off due to a medium fire, the outer high-temperature-resistant graphite filler (second filler 9) and the graphite gasket (third filler 11) can still play a sealing role. The joint of the valve body 1 and the valve cover 2 is provided with a first sealing gasket 15 and a second sealing gasket 16 which are respectively arranged at one end close to the valve body cavity 6, and the first sealing gasket 15 and the second sealing gasket 16 are distributed in a Z shape and matched with a filler to play a good sealing role in the valve body cavity 6.
Wherein, the medial surface of gland nut 12 inlays and is equipped with bush 13, sets up bush 13, can prevent the wearing and tearing or the card of gland nut 12 and die, guarantees that gland nut 12 can normally work.
Wherein, be equipped with thrust pad 14 between the bottom of valve rod 4 and valve body 1, thrust pad 14 is located packing and the support bulge loop 5 of valve rod 4 bottom, plays thrust bearing's effect.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a no dish spring filler system ball valve of nut formula, includes valve body, valve gap, case ball and valve rod, the valve body with valve gap fixed connection constitutes and is used for placing the valve body chamber of case ball, the valve rod with case ball fixed connection, the upper end of valve rod is connected with the handle bar, its characterized in that: the valve rod with the junction of valve body is from up being equipped with first filler, second filler, clamping ring, third filler and gland nut down in proper order.
2. A nut type disc spring-free packing system ball valve according to claim 1, wherein: the first filler is integrally formed by a horizontal ring body and a vertical wedge-shaped ring body, and the outer side surface of the vertical wedge-shaped ring body is a wedge-shaped side surface with an upward tip end.
3. A nut-type disc-spring-free packing system ball valve as defined in claim 2, wherein: the second filler is sleeved outside the vertical wedge-shaped ring body, the inner side surface of the second filler is a wedge-shaped ring side surface with a downward pointed end, and the wedge-shaped inner side surface of the second filler is matched with the outer side surface of the vertical wedge-shaped ring body; the upper surface of the second filler is slightly higher than the upper surface of the vertical wedge-shaped annular ring body.
4. A nut type disc spring-free packing system ball valve according to claim 1, wherein: the first filler is a PTFE filler.
5. A nut type disc spring-free packing system ball valve according to claim 1, wherein: the second filler and the third filler are graphite fillers, respectively.
6. A nut type disc spring-free packing system ball valve according to claim 1, wherein: and a bush is embedded on the inner side surface of the compression nut.
7. A nut type disc spring-free packing system ball valve according to claim 1, wherein: and a thrust pad is arranged between the bottom end of the valve rod and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922190973.7U CN211693607U (en) | 2019-12-09 | 2019-12-09 | Nut type ball valve without disc spring packing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922190973.7U CN211693607U (en) | 2019-12-09 | 2019-12-09 | Nut type ball valve without disc spring packing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211693607U true CN211693607U (en) | 2020-10-16 |
Family
ID=72790315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922190973.7U Active CN211693607U (en) | 2019-12-09 | 2019-12-09 | Nut type ball valve without disc spring packing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211693607U (en) |
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2019
- 2019-12-09 CN CN201922190973.7U patent/CN211693607U/en active Active
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Address after: No.96 Zizhu Road, Zhengzhou hi tech Industrial Development Zone, Henan Province Patentee after: Henan Fujia fluid control technology Co., Ltd Address before: No.96 Zizhu Road, Zhengzhou hi tech Industrial Development Zone, Henan Province Patentee before: Henan taoen Machinery Co.,Ltd. |