CN105351560A - Full-floating ball rigidity seal ball valve - Google Patents
Full-floating ball rigidity seal ball valve Download PDFInfo
- Publication number
- CN105351560A CN105351560A CN201510905587.5A CN201510905587A CN105351560A CN 105351560 A CN105351560 A CN 105351560A CN 201510905587 A CN201510905587 A CN 201510905587A CN 105351560 A CN105351560 A CN 105351560A
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- CN
- China
- Prior art keywords
- valve
- ball
- seat
- auxiliary
- valve body
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0668—Single packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Abstract
The invention discloses a rigidity seal floating ball valve, and particularly relates to a full-floating ball rigidity seal ball valve. The full-floating ball rigidity seal ball valve mainly comprises a main valve body, a valve ball, a main valve seat, namely a fixed valve seat which is fixed on the valve body, a subsidiary valve seat, namely a floating valve seat which is pushed by a spring, a coupling shaft, a valve rod and a stuffing box. According to the full-floating ball rigidity seal ball valve, when the valve ball is at a full-opening position and a full-closing position or is in an opening-closing process, the valve ball can float in the passage direction, so that the sealing surface of the valve ball and the sealing surface of the fixed valve seat are in a close clinging state all the time; a medium is prevented from entering a space between the sealing surfaces; and pressure between the sealing surfaces are prevented from being overlarge, and the valve rod is prevented from being affected by a bending moment. Therefore, internal leakage and external leakage are avoided, and the service life of the valve is prolonged.
Description
Technical field
The present invention relates to valve technology field, is exactly a kind of full floating ball hard seal ball valve specifically.
Technical background
Existing have floating ball hard seal ball valve, and actuate valve stem is directly connected with valve ball, and connection part valve rod is flat tenon structure, and valve ball is tenon groove structure, and the tongue-and-groove direction of valve ball is vertical with the runner of valve ball.This structure just determines that valve ball is when closed position, and valve ball can free floating, but when enable possition, and valve ball and valve base chamber can not float or floating limited, so have following consequence:
There is gap in valve ball and primary seal valve base chamber, enters medium inside gap, if medium is hard particles, in open and close process, can cause sealing damage, thus valve leaks.
Between primary seal valve seat and valve ball, extruding force is excessive, causes sealing surface of seat to exceed specific pressure allowable, sealing surface is damaged, valve leaks.
1, valve rod and valve ball joint stressed excessive, produce fracture, meanwhile, because valve rod is subject to the effect of moment of flexure, the lateral extrusion power that filler is subject to is inconsistent, causes stressed large one side to lose efficacy too fast, causes and expose.
2 if the valve ball reaching open position by the gap strengthened between the flat tenon of valve rod and valve ball tongue-and-groove floats, the too little limited use played in gap, when too conference causes open and close, valve ball is closed not in place, and impact force larger between the flat tenon of valve rod and valve ball tongue-and-groove, causes the fracture at the flat tenon place of valve rod.
Summary of the invention
The object of this invention is to provide a kind of full floating ball hard seal ball valve, in order to solve in prior art valve ball when enable possition, can not to float due to valve ball and valve base chamber or float the limited and problem such as sealing surface that is that cause damages, the fracture at the flat tenon place of valve leaks, valve rod.
Technological scheme of the present invention is: full floating ball hard seal ball valve, mainly comprise main valve body, auxiliary valve body, main valve seat, auxiliary-seat, spring, valve ball, Coupling Shaft, valve rod, stuffing box, main valve body 01 is connected by bolt 03 and nut 04 with auxiliary valve body 02, jointly forms pressure-bearing shell, main valve seat 05 is fixed on auxiliary valve body (02) by pressing plate, auxiliary-seat (07) is arranged in the valve seat orifice (15) of main valve body, it is characterized in that: between main valve body (01) and auxiliary-seat (07), be provided with spring (08), valve ball (09) is between main valve seat (05) and auxiliary-seat (07), radial location is carried out by it, and be rotated under the driving of actuator, Coupling Shaft (10) is arranged between valve ball (09) and valve rod (11), the tongue-and-groove I (10a) of Coupling Shaft (10) coordinates with the flat tenon II (11a) on valve rod (11), the flat tenon I (10b) of Coupling Shaft (10) coordinates with the tongue-and-groove II (09a) of valve ball (09), stuffing box (12) is had outside valve rod (11), stuffing box (12) and main valve body (01) are bolted.Tongue-and-groove I (10a) and the flat tenon I (10b) of Coupling Shaft (10), arranged in an angle of 90 degrees.Main valve seat (05) is fixed valve base, and auxiliary-seat (07) is floating valve seat, and sealing surface is high hardness alloy, and main valve seat (05) is fixed on auxiliary valve body (02), for metal flat seals between main valve seat (05) and auxiliary valve body (02) by pressing plate.Spring (08) drives auxiliary-seat (07) to move along axis, and the pretightening force simultaneously provide main valve seat (05), needing between auxiliary-seat (07) and valve ball (09), has filler (14) in stuffing box (12), for realizing valve rod (11) sealing.Valve rod is the driver part of valve ball motion, carries out upper limit by stuffing box.
Beneficial effect of the present invention is: full floating hard seal ball valve, and sealing surface of seat is cemented carbide, ball surface cure process.A Coupling Shaft is set between valve ball and valve rod, valve ball all can be floated in channel direction in fully open position, closed positions and switching process, make to be in the state of fitting tightly all the time between the sealing surface of valve ball and fixed valve base, prevent medium from entering between sealing surface, prevent pressure between sealing surface excessive, prevent valve rod to be subject to the effect of moment of flexure.Thus prevent interior leakage, leak outside and extend working life of valve.
Accompanying drawing explanation
Sectional view when Fig. 1 is full floating ball hard seal ball valve of the present invention unlatching.
Sectional view when Fig. 2 is full floating ball hard seal ball valve of the present invention closedown.
Fig. 3 is the shaft side figures such as valve rod.
Fig. 4 is the shaft side figures such as Coupling Shaft.
Fig. 5 is the shaft side figures such as valve ball.
Embodiment
For achieving the above object, the invention provides technological scheme, be described below in conjunction with accompanying drawing:
This full floating ball hard seal ball valve, mainly comprises main valve body, auxiliary valve body, main valve seat, auxiliary-seat, spring, valve ball, Coupling Shaft, valve rod, stuffing box.Described main valve body 01 is connected by bolt 03 and nut 04 with secondary valve 02 body, jointly forms pressure-bearing shell; Described main valve seat 05 is fixed valve base, and sealing surface is high hardness alloy, is fixed on auxiliary valve body 02 by pressing plate, for metal flat seals between main valve seat 05 and auxiliary valve body 02; The auxiliary-seat 07 stated is floating valve seat, sealing surface is high hardness alloy, be arranged in the valve seat orifice 15 of main valve body, described spring 08 is arranged between main valve body auxiliary-seat, auxiliary-seat 07 can be driven to move along axis, the pretightening force simultaneously provide main valve seat 05, needing between auxiliary-seat 07 and valve ball 09, described valve ball 09 Surface hardening treatment, to be arranged between main valve seat 05 and auxiliary-seat 07 and to carry out radial location by it, and being rotated under the driving of actuator.Described Coupling Shaft 10 is arranged between valve ball 09 and valve rod 11, and have tongue-and-groove 10a and flat tenon 10b structure, tongue-and-groove 10a and flat tenon 10b is that an angle of 90 degrees is arranged simultaneously.The tongue-and-groove 10a of Coupling Shaft 10 coordinates with the flat tenon 11a on valve rod 11, the flat tenon 10b of Coupling Shaft 10 coordinates with the tongue-and-groove 09a of valve ball 09.When valve ball 09 is in enable possition, the flat tenon 11a of valve ball 09 along valve rod 11 together with Coupling Shaft 10 moves; When valve ball 09 is in the closed position, valve ball 09 moves along the flat tenon 10a of Coupling Shaft 10; When valve ball 09 mediates, valve ball 09 moves along the flat tenon 10a of Coupling Shaft, and Coupling Shaft there is not the flat tenon 11a of valve rod 11 to move; Thus realize valve ball 09 characteristic can floated along runner direction at an arbitrary position.Thus ensure valve ball 09 and main valve seat 05, auxiliary-seat 07 under the effect of spring 08 power and pressure medium arbitrary position can fit tightly.Described valve rod 11 is driver parts that valve ball 09 moves, and carries out upper limit by stuffing box 12.Described stuffing box 12 is connected by bolt 13 with main valve body 01, and valve rod 11 through its axis hole, and holds filler 14 and seals to realize valve rod 11.
Claims (6)
1. full floating ball hard seal ball valve, mainly comprise main valve body, auxiliary valve body, main valve seat, auxiliary-seat, spring, valve ball, Coupling Shaft, valve rod, stuffing box, main valve body (01) is connected by bolt (03) and nut (04) with auxiliary valve body (02), jointly forms pressure-bearing shell; Main valve seat (05) is fixed on auxiliary valve body (02) by pressing plate, auxiliary-seat (07) is arranged in the valve seat orifice (15) of main valve body, it is characterized in that: between main valve body (01) and auxiliary-seat (07), be provided with spring (08), valve ball (09) is between main valve seat (05) and auxiliary-seat (07), radial location is carried out by it, and be rotated under the driving of actuator
Coupling Shaft (10) is arranged between valve ball (09) and valve rod (11), the tongue-and-groove I (10a) of Coupling Shaft (10) coordinates with the flat tenon II (11a) on valve rod (11), the flat tenon I (10b) of Coupling Shaft (10) coordinates with the tongue-and-groove II (09a) of valve ball (09), have stuffing box (12) outside valve rod (11), stuffing box (12) and main valve body (01) are bolted.
2. full floating ball hard seal ball valve according to claim 1, is characterized in that: tongue-and-groove I (10a) and the flat tenon I (10b) of Coupling Shaft (10), arranged in an angle of 90 degrees.
3. full floating ball hard seal ball valve according to claim 1, it is characterized in that: main valve seat (05) is fixed valve base, auxiliary-seat (07) is floating valve seat, sealing surface is high hardness alloy, main valve seat (05) is fixed on auxiliary valve body (02), for metal flat seals between main valve seat 05 and auxiliary valve body (02) by pressing plate.
4. full floating ball hard seal ball valve according to claim 1, is characterized in that: spring (08) drives auxiliary-seat (07) to move along axis, the pretightening force simultaneously provide main valve seat (05), needing between auxiliary-seat (07) and valve ball (09).
5. full floating ball hard seal ball valve according to claim 1, is characterized in that: have filler (14) in stuffing box (12), for realizing valve rod (11) sealing.
6. full floating ball hard seal ball valve according to claim 1, is characterized in that: valve rod is the driver part of valve ball motion, carries out upper limit by stuffing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510905587.5A CN105351560B (en) | 2015-12-10 | 2015-12-10 | Full floating ball hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510905587.5A CN105351560B (en) | 2015-12-10 | 2015-12-10 | Full floating ball hard seal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351560A true CN105351560A (en) | 2016-02-24 |
| CN105351560B CN105351560B (en) | 2017-10-17 |
Family
ID=55327590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510905587.5A Active CN105351560B (en) | 2015-12-10 | 2015-12-10 | Full floating ball hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351560B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763870A (en) * | 2017-01-19 | 2017-05-31 | 上海凯工阀门股份有限公司 | A kind of Wear-resistant, high-temperature resistant metal hard-sealing ball valve |
| CN108953660A (en) * | 2018-08-30 | 2018-12-07 | 昆山维萨阀门有限公司 | A kind of Bidirectional hard seal floating ball valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006144920A (en) * | 2004-11-19 | 2006-06-08 | Flo-Tec Ltd | Ball valve |
| CN201013947Y (en) * | 2006-11-01 | 2008-01-30 | 王枵天 | Broadspectrum corrosion resistant floating type ball-valve |
| RU112317U1 (en) * | 2011-07-22 | 2012-01-10 | Открытое акционерное общество "Опытное Конструкторское Бюро Машиностроения имени И.И. Африкантова" (ОАО "ОКБМ Африкантов") | BALL VALVE |
| CN103574088A (en) * | 2012-08-09 | 2014-02-12 | 科普蓝(上海)阀门工业有限公司 | Ball valve |
| CN203718022U (en) * | 2013-12-03 | 2014-07-16 | 温州市四方制药设备成套有限公司 | Ball valve |
| CN204533638U (en) * | 2015-03-16 | 2015-08-05 | 张家港富瑞特种装备股份有限公司 | The ball lining sealing configuration of new type low temperature pneumatic ball valve |
-
2015
- 2015-12-10 CN CN201510905587.5A patent/CN105351560B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006144920A (en) * | 2004-11-19 | 2006-06-08 | Flo-Tec Ltd | Ball valve |
| CN201013947Y (en) * | 2006-11-01 | 2008-01-30 | 王枵天 | Broadspectrum corrosion resistant floating type ball-valve |
| RU112317U1 (en) * | 2011-07-22 | 2012-01-10 | Открытое акционерное общество "Опытное Конструкторское Бюро Машиностроения имени И.И. Африкантова" (ОАО "ОКБМ Африкантов") | BALL VALVE |
| CN103574088A (en) * | 2012-08-09 | 2014-02-12 | 科普蓝(上海)阀门工业有限公司 | Ball valve |
| CN203718022U (en) * | 2013-12-03 | 2014-07-16 | 温州市四方制药设备成套有限公司 | Ball valve |
| CN204533638U (en) * | 2015-03-16 | 2015-08-05 | 张家港富瑞特种装备股份有限公司 | The ball lining sealing configuration of new type low temperature pneumatic ball valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763870A (en) * | 2017-01-19 | 2017-05-31 | 上海凯工阀门股份有限公司 | A kind of Wear-resistant, high-temperature resistant metal hard-sealing ball valve |
| CN108953660A (en) * | 2018-08-30 | 2018-12-07 | 昆山维萨阀门有限公司 | A kind of Bidirectional hard seal floating ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105351560B (en) | 2017-10-17 |
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