CN2775423Y - Top seal type ball valve - Google Patents
Top seal type ball valve Download PDFInfo
- Publication number
- CN2775423Y CN2775423Y CN 200420120729 CN200420120729U CN2775423Y CN 2775423 Y CN2775423 Y CN 2775423Y CN 200420120729 CN200420120729 CN 200420120729 CN 200420120729 U CN200420120729 U CN 200420120729U CN 2775423 Y CN2775423 Y CN 2775423Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- filler
- support
- tooth circle
- 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
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Abstract
The utility model relates to a top seal type ball valve which mainly comprises a valve body, a valve cover, a valve rod, a hand wheel, an opening and closing piece ball body, a ball body sealing ring, upper stuffing, a stuffing press sleeve and a stuffing press plate which is fixed on the press sleeve, wherein a support is arranged on the valve cover, and a valve rod nut and a nut seat which are connected with the hand wheel is arranged in an upper body of the support; the upper end of the valve rod is connected with the valve rod nut by threads to form a rotary lifting valve rod nut pair. The lower surface of the nut seat is provided with a cam sleeve composed of a driving tooth ring, a driven tooth ring, a spring and a position limiting tooth ring; the driving tooth ring is connected with the nut seat, the driven tooth ring is arranged on the valve rod and the spring is arranged between the driven tooth ring and the bottom surface in the upper body of the support. The lower part of the upper stuffing between the valve cover and the valve rod is provided with an upper sealing seat, and an upper sealing pair of the valve is formed from the sealing seat and the upper sealing part of the valve rod end. The utility model has the characteristics that the service life is long, the sealing is reliable, the overhaul of a pipeline is convenient, the problems of escape, overflow, dripping, leakage can be effectively prevented from occurring and the opening torsional moment and the closing torsional moment are decreased.
Description
Technical field:
The utility model relates to a kind of valve, specifically a kind of back seal ball valve that goes up.
Background technique:
At present, on the market common to ball valve mostly do not go up sealing configuration, when valve was in opening state, filler was subjected to the pressure of pipeline medium between valve gap and the valve rod, service time of a specified duration the problem of evaporating, emitting, dripping or leaking of liquid or gas easily takes place at last filler position; The necessary specific pressure of ball valve sealing is to adjust pretightening force in advance when product assembling or repairing, and this pretightening force acts in the ball valve opening-closing process between the open-shut device ball seal pair all the time, makes open and close torque very big; Have yet and adopt built-in elastic element to produce pretightening force, but often pretightening force not.In addition, when pipeline overhauls, often need valve is removed from pipeline, time-consuming bothersome.
Summary of the invention:
In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provides a kind of long service life, sealing is reliable and be convenient to the last back seal ball valve that pipeline overhauls, and makes it to prevent the generation of evaporating, emitting, dripping or leaking of liquid or gas problem, reduces open and close torque.
The purpose of this utility model is achieved in that it mainly comprises valve body, valve gap, valve rod, handwheel, open-shut device spheroid, ball seal ring, goes up filler, filler gland and fixes the hold-down grid of this gland, last filler places asking of valve gap and valve rod, the filler gland is pressed on the filler, the valve rod lower end links to each other with open-shut device spheroid in placing valve body, it is characterized in that: on valve gap, be provided with support, be provided with the Stem Mut and the nut seat that link to each other with handwheel in the upper body of this support, the upper end of valve rod is threaded with this Stem Mut and constitutes rotation and lifting valve stalk pair of nut; Be provided with the jaw clutch that is made of active tooth circle, passive tooth circle, spring and spacing tooth circle below nut seat, initiatively the tooth circle links to each other with nut seat, and passive tooth circle is located on the valve rod, and spring is located between the bottom surface in passive tooth circle and the support upper body; The filler bottom is provided with upper seal support between valve gap and the valve rod, seals position (seal boss of being with) on sealing seat and the valve rod end and constitutes sealing pair on the valve.When the open-shut device spheroid is in the closed position, be rotated counterclockwise handwheel, valve rod at first moves up, and spurs the open-shut device spheroid simultaneously and also moves up, and the open-shut device spheroid makes the ball seal ring unclamp at the valve seal wedge surface.Continue to be rotated counterclockwise handwheel, initiatively tooth circle and passive tooth circle drive the rotation of open-shut device spheroid under spring thrust and mesh.When the open-shut device spheroid rotated to enable possition (when open-shut device through hole that spheroid is with communicates with the valve body import and export), at this moment initiatively the tooth circle was oppressed passive tooth circle and spring, made initiatively tooth circle and the disengaging of passive tooth circle.When continuing to be rotated counterclockwise handwheel again, the open-shut device spheroid no longer rotates and valve rod moves up, the moment of torsion increase handwheel that just stops the rotation when the sealing position contacts with upper seal support on the valve rod end, thus finished breakdown action; When the open-shut device spheroid is in the enable possition, the handwheel that turns clockwise, valve rod at first moves down, and sealing position and upper seal support break away from the valve rod end.Continue the handwheel that turns clockwise, initiatively tooth circle and passive tooth circle drive the rotation of open-shut device spheroid under spring thrust and mesh.When the open-shut device spheroid rotated to closed position, at this moment initiatively the tooth circle was oppressed passive tooth circle and spring, made initiatively tooth circle and the disengaging of passive tooth circle.When continuing again to turn clockwise handwheel, the open-shut device spheroid no longer rotates and valve rod moves down, promote the open-shut device spheroid simultaneously and also move down, moment of torsion increases the handwheel that just stops the rotation when the open-shut device spheroid makes seal ring in the wedging of valve seal wedge surface, thereby has finished closing motion.
For the ease of the pipeline maintenance, this ball valve adopts goes up assembling structure, and promptly the hold-down grid on the filler gland links to each other by the swing bolt with the frame bottom hinge joint with support set on valve gap.
The utility model has the advantages that by sealing configuration is set and to solve the problem that evaporating, emitting, dripping or leaking of liquid or gas takes place because of the pressure that is subjected to pipeline medium at the filler position effectively, by the structure that adopts jaw clutch arrangement operation program open and close torque is reduced greatly, thereby improve greatly in the sealing of making and working life; Assembling structure in the employing need not be pulled down valve just and can overhaul from pipeline when pipeline overhauls.
Below in conjunction with accompanying drawing the utility model is explained.
Description of drawings:
Accompanying drawing is the utility model structural representation.
Embodiment:
By accompanying drawing as can be known, the utility model mainly comprises valve body 5, valve gap 4, valve rod 3, handwheel 13, open-shut device spheroid 2, ball seal ring 1, goes up filler 7, filler gland 25, hold-down grid 24, support 8 Stem Muts 11, nut seat 15 and be located at the jaw clutch that is made of active tooth circle 16, passive tooth circle 18, spring 22 and spacing tooth circle 19 in the 8-1 of support upper body.Last filler 7 places between valve gap 4 and the valve rod 3, and filler gland 25 is pressed on the filler 7, and hold-down grid 24 is pressed on the filler gland 25; Valve rod 3 lower ends link to each other with open-shut device spheroid 2 in placing valve body 5; Support 8 is located on the valve gap 4, be provided with the Stem Mut 11 and the nut seat 15 that link to each other with handwheel 13 in the upper body 8-1 of this support, Stem Mut 11 links to each other by key 14 with nut seat 15, and the upper end of valve rod 3 is threaded with Stem Mut 11 and constitutes rotation and lifting Stem Mut pair; Nut seat 15 be connected passive tooth circle lift valve stem nut pair below by screw 17 with tooth circle 16 initiatively; Being connected with tooth circle 16 initiatively below by screw 17 of nut seat 15, passive tooth circle 18 is located on the valve rod 3, and spacing tooth circle 19 links to each other with passive tooth circle 18 by round nut 21, and spring 22 is located between the interior bottom surface of passive tooth circle 18 and support upper body 8-1; Filler 7 bottoms are provided with upper seal support 28 between valve gap 4 and the valve rod, sealing pair on sealing position 3-1 (seal boss of being with) the formation valve on sealing seat and valve rod 3 ends; Be provided with filler 30 between valve gap 4 and valve body 5, do not have filler gland 29 on the filler 30, gland 6 is fixed on valve gap 4 on the valve body 5 by filler gland 29 and filler 30; Swing bolt 26 is by pin 27 and the hinge joint of support 8 bottoms, and swing bolt 26 tops link to each other by nut 23 with hold-down grid 24 on the filler gland 25.Nut 23 is backed out promptly detachable this ball valve from swing bolt 26.
Claims (2)
1, a kind of back seal ball valve that goes up, it mainly comprises valve body, valve gap, valve rod, handwheel, open-shut device spheroid, ball seal ring, last filler, filler gland and fixes the hold-down grid of this gland, last filler places between valve gap and the valve rod, the filler gland is pressed on the filler, the valve rod lower end links to each other with open-shut device spheroid in placing valve body, it is characterized in that: on valve gap, be provided with support, be provided with the Stem Mut and the nut seat that link to each other with handwheel in the upper body of this support, the upper end of valve rod is threaded with this Stem Mut and constitutes rotation and lifting Stem Mut pair; Be provided with the jaw clutch that is made of active tooth circle, passive tooth circle, spring and spacing tooth circle below nut seat, initiatively the tooth circle links to each other with nut seat, and passive tooth circle is located on the valve rod, and spring is located between the bottom surface in passive tooth circle and the support upper body; The filler bottom is provided with upper seal support between valve gap and the valve rod, and the sealing position constitutes sealing pair on the valve on sealing seat and the valve rod end.
2, the back seal ball valve that goes up as claimed in claim 1 is characterized in that: the hold-down grid on the filler gland links to each other by the swing bolt with the frame bottom hinge joint with support set on valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120729 CN2775423Y (en) | 2004-12-27 | 2004-12-27 | Top seal type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120729 CN2775423Y (en) | 2004-12-27 | 2004-12-27 | Top seal type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775423Y true CN2775423Y (en) | 2006-04-26 |
Family
ID=36749740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420120729 Expired - Fee Related CN2775423Y (en) | 2004-12-27 | 2004-12-27 | Top seal type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2775423Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464096C (en) * | 2007-04-05 | 2009-02-25 | 山西兴工阀门制造有限公司 | Replaceable valve of dual-sealing ring |
| CN108150668A (en) * | 2018-02-12 | 2018-06-12 | 无锡智能自控工程股份有限公司 | Poppet rod-type top mounting ball valve |
-
2004
- 2004-12-27 CN CN 200420120729 patent/CN2775423Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464096C (en) * | 2007-04-05 | 2009-02-25 | 山西兴工阀门制造有限公司 | Replaceable valve of dual-sealing ring |
| CN108150668A (en) * | 2018-02-12 | 2018-06-12 | 无锡智能自控工程股份有限公司 | Poppet rod-type top mounting ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |