CN203926880U - Seal ball-valve - Google Patents
Seal ball-valve Download PDFInfo
- Publication number
- CN203926880U CN203926880U CN201420321088.2U CN201420321088U CN203926880U CN 203926880 U CN203926880 U CN 203926880U CN 201420321088 U CN201420321088 U CN 201420321088U CN 203926880 U CN203926880 U CN 203926880U
- Authority
- CN
- China
- Prior art keywords
- valve
- stuffing box
- ball
- seal
- valve rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a kind of seal ball-valve, it includes a ball core, at least one valve seat, a Stuffing box and a valve rod, on described ball core, be connected with described valve rod, described ball core for rotating to switch the runner of described ball in-core and the connected state of the passage on described valve seat under the drive of valve rod, described valve rod is arranged with described Stuffing box outward, is provided with at least one seal ring and at least one insertion ring on the inwall of described Stuffing box; Described seal ring is elastic material; Described seal ring and described insertion ring are sheathed on the periphery of described valve rod.By seal ring and seal ring duplicate protection are set on the interior week of Stuffing box, make still can keep good sealing between the valve rod of the seal ball-valve under low-temperature condition and Stuffing box.
Description
Technical field
The utility model relates to a kind of ball valve, particularly a kind of seal ball-valve.
Background technique
At present, ball valve can be applicable to the industry that pipeline medium temperature is lower and pressure is higher.Ball valve is comprised of valve portion parts, driving mechanism and related accessories.But, mainly there is following problem in the ball valve of prior art: one, existing ball valve is mainly to adopt nonmetallic material as filler, for example teflon (PTFE) or graphite carry out sealed valve stem, can can lose at the filler of this type material under low-temperature condition its original performance is easily out of shape or becomes fragile, and cause again valve stem part being sealed, finally can produce the problem of valve leak.
Model utility content
The technical problems to be solved in the utility model is to come sealed valve stem easy sex change under low-temperature condition to cause the poor defect of sealing in order to overcome prior art nonmetallic material composition ball valve filler, provides a kind of at the better seal ball-valve of low-temperature condition seal performance.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of seal ball-valve, it includes a ball core, at least one valve seat, a Stuffing box and a valve rod, on described ball core, be connected with described valve rod, described ball core for rotating to switch the runner of described ball in-core and the connected state of the passage on described valve seat under the drive of valve rod, described valve rod is arranged with described Stuffing box outward, its feature is, is provided with at least one seal ring and at least one insertion ring on the inwall of described Stuffing box;
Described seal ring is elastic material;
Described seal ring and described insertion ring are sheathed on the periphery of described valve rod;
Described Stuffing box embeds described ball core, and described seal ring is arranged at described Stuffing box on the interior week near one end of described ball core;
Described insertion ring is a graphite packing circle, and it is upper away from the interior week of one end of described ball core that described graphite packing circle is arranged at described Stuffing box, and described seal ring is also arranged at interior all the above the graphite packing circles of described Stuffing box near a side of described ball core.
That is to say, at ball core, rotate up to runner when passage on valve seat does not dock, the medium in runner may leak to valve rod and Stuffing box position, from the gap between valve rod and Stuffing box toward exosmosis.Therefore between valve rod and Stuffing box, be provided with seal ring and insertion ring.Because elastic material has the speciality of accumulation of energy (savings elastic potential energy), when sealing, can resist the pressure of medium.In addition, even if lose original elastic compensating ability by force or at specific temperature (as low temperature) seal ring at pressure medium, can also as second defence line, stop medium reveal by the insertion ring of hard.
In addition, be provided with two seal rings, respectively at carrying out duplicate protection on week in Stuffing box two ends, after seal ring duplicate protection, more further seal with particular surroundingss such as antagonism cryogenic high pressures by the graphite packing circle of hard.
Preferably, described seal ring is elastic polymeric material.
Adopting elastic polymer material to make seal ring herein, is because polymer has the ability of anti-oxidant, corrosion preferably.
Positive progressive effect of the present utility model is: by seal ring and seal ring duplicate protection are set on the interior week of Stuffing box, make still can keep good sealing between the valve rod of the seal ball-valve under low-temperature condition and Stuffing box.
Accompanying drawing explanation
Fig. 1 is the structural representation in cross section of the seal ball-valve of the utility model preferred embodiment.
Fig. 2 is the structural representation of the black box of the utility model preferred embodiment.
Fig. 3 is the structural representation of another black box of the utility model preferred embodiment.
Embodiment
Lift a preferred embodiment below, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
Fig. 1 is the structural representation in cross section of the seal ball-valve of the present embodiment, Fig. 2 is the structural representation of the black box of the present embodiment, Fig. 3 is the structural representation of another black box of the present embodiment, and as shown in Figures 1 to 3, the seal ball-valve that the present embodiment relates to includes main valve body 1, auxiliary valve body 2, valve body connecting stud 4 and nut 5, valve seal pad 3, valve seat insert 6, valve seat valve seals 7, valve base sealing baffle ring 8, valve base sealing pad 9, seat load spring 10, trim ring gasket seal 11, trim ring 12, valve seat 13, ball core 14, accumulation of energy seal ring 15, valve rod thrust washer 16, upper sliding bearing 17, valve stem seal accumulation of energy seal ring 18, valve rod 19, Stuffing box 20, Stuffing box gasket seal 21, Stuffing box attachment screw 22, filler metal packing ring 23, filler assembly 24, filler pressing sleeve 25, filler pressing sleeve flange 26, filler compresses double-screw bolt 27 and nut 28, filler spring loaded 29, parallel key 30, hoisting board 31, supporting frame 32, properties of journal bearing lubricated 33, lower shaft lid 34, lower shaft sealing cushion for cover sheet 35, lower shaft lid attachment screw 36.Main valve body 1 is by valve body connecting stud 4, nut 5 is fixing with auxiliary valve body 2, valve seal pad 3 is between main valve body 1 and auxiliary valve body 2, ball core 14 is located in main valve body 1, valve seat valve seals 7, valve base sealing baffle ring 8, valve base sealing pad 9 is between valve seat 13 and trim ring 12, seat load spring 10 is between auxiliary valve body 2 and trim ring 12, accumulation of energy seal ring 15 is embedded in valve seat 13, trim ring gasket seal 11 is between trim ring 12 and auxiliary valve body 2, valve rod thrust washer 16 is between valve rod 19 and Stuffing box 20, Stuffing box 20 is fixed on main valve body 1 by Stuffing box attachment screw 22, Stuffing box gasket seal 21 is between Stuffing box 20 and main valve body 1, valve stem seal accumulation of energy seal ring 18 is between Stuffing box 20 and valve rod 19, upper sliding bearing 17 is between Stuffing box 20 and ball core 14, filler metal packing ring 23, filler assembly 24 is by filler pressing sleeve 25, filler pressing sleeve flange 26 is pressed in Stuffing box 20, filler pressing sleeve flange 26 is compressed double-screw bolt 27 and nut 28 by filler, filler spring loaded 29 compresses, lower shaft lid 34 is fixed on main valve body 1 by lower shaft lid attachment screw 36, lower shaft sealing cushion for cover sheet 35 is between lower shaft lid 34 and main valve body 1, properties of journal bearing lubricated 33 is between lower shaft lid 34 and ball core 14, hoisting board 31, supporting frame 32 is positioned at main valve body 1 both sides, parallel key 30 is on valve rod 19.
That is to say that the sealing gap between Stuffing box 20 and valve rod 19 had to valve stem seal accumulation of energy seal ring 18, filler metal packing ring 23, a filler assembly 24.Wherein, the multiple action lower valve rod 19 at filler pressing sleeve 25, filler pressing sleeve flange 26, filler compression double-screw bolt 27, nut 28 and filler spring loaded 29 is compressed with Stuffing box 20.And then make to be put aside elastic potential energy as the valve stem seal accumulation of energy seal ring 18 of seal ring, improve leakage efficiency.In addition, the main stuffing in filler assembly 24 is graphite, and valve stem seal accumulation of energy seal ring 18 is elastic polymeric material.Two valve stem seal accumulation of energy seal rings 18 are arranged at respectively Stuffing box 20 near one end of ball core with near on the interior week of filler assembly 24.To gap, carry out multi-sealed.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model and essence, can make various changes or modifications to these mode of executions, and these changes and modification all fall into protection domain of the present utility model.
Claims (2)
1. a seal ball-valve, it includes a ball core, at least one valve seat, a Stuffing box and a valve rod, on described ball core, be connected with described valve rod, described ball core for rotating to switch the runner of described ball in-core and the connected state of the passage on described valve seat under the drive of valve rod, described valve rod is arranged with described Stuffing box outward, it is characterized in that, on the inwall of described Stuffing box, be provided with at least one seal ring and at least one insertion ring;
Described seal ring is elastic material;
Described seal ring and described insertion ring are sheathed on the periphery of described valve rod;
Described Stuffing box embeds described ball core, and described seal ring is arranged at described Stuffing box on the interior week near one end of described ball core;
Described insertion ring is a graphite packing circle, and it is upper away from the interior week of one end of described ball core that described graphite packing circle is arranged at described Stuffing box, and described seal ring is also arranged at interior all the above the graphite packing circles of described Stuffing box near a side of described ball core.
2. seal ball-valve as claimed in claim 1, is characterized in that, described seal ring is elastic polymeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420321088.2U CN203926880U (en) | 2014-06-16 | 2014-06-16 | Seal ball-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420321088.2U CN203926880U (en) | 2014-06-16 | 2014-06-16 | Seal ball-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926880U true CN203926880U (en) | 2014-11-05 |
Family
ID=51822692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420321088.2U Expired - Fee Related CN203926880U (en) | 2014-06-16 | 2014-06-16 | Seal ball-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926880U (en) |
-
2014
- 2014-06-16 CN CN201420321088.2U patent/CN203926880U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201323 Shanghai city Pudong New Area Zhuqiao gold Lianglu No. 32 Building 2 Patentee after: More research (Shanghai) valve industry Co. Ltd. Address before: 201323 Shanghai city Pudong New Area Zhuqiao gold Lianglu No. 32 Building 2 Patentee before: Copeland (Shanghai) Valve Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20190616 |