CN102620005A - Low-operating torque and low-leakage floating ball valve - Google Patents
Low-operating torque and low-leakage floating ball valve Download PDFInfo
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- CN102620005A CN102620005A CN2012101066740A CN201210106674A CN102620005A CN 102620005 A CN102620005 A CN 102620005A CN 2012101066740 A CN2012101066740 A CN 2012101066740A CN 201210106674 A CN201210106674 A CN 201210106674A CN 102620005 A CN102620005 A CN 102620005A
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- floating ball
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Abstract
The invention discloses a low-operating torque and low-leakage floating ball valve. The low-operating torque and low-leakage floating ball valve comprises a valve body, a valve cover, a ball body, a valve seat, a valve rod, a three-way handle and a handle steel pipe, wherein a filler gland is arranged on the valve rod; the lower part of the filler gland is connected with the valve body; a valve rod filler, a second O-shaped ring bracket located below the valve rod filler and a second O-shaped ring mounted on the second O-shaped ring bracket are arranged in gaps among the filler gland, the valve body and the valve rod; a first O-shaped ring and a graphite gasket are arranged between the valve body and the valve cover; and the valve seat adopts an elastic valve seat. The low-operating torque and low-leakage floating ball valve is novel in structure design, has the characteristics of good stability, long service life, excellent fireproof performance and the like, and realizes ultralow radiation leakage between the inside and the outside; the low-operating torque and low-leakage floating ball valve is mainly applied to places with high sealing requirement, frequent operation and pneumatic or electric self-control operation configuration demand; and due to the design of the elastic valve seat, the processing precision requirements of the valve body, the valve cover and the ball body are lowered, and the operating torque is reduced.
Description
Technical field
The present invention relates to a kind of valve, be specifically related to the low floating ball valve that leaks of a kind of low operation moment of torsion, belong to mechanical manufacturing field fluid control field.
Background technique
We know; Ball valve is widely used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, existing floating ball valve comprise valve body, with valve body link the valve gap that can form a cavity, at the spheroid in the middle of the cavity, be arranged between valve body and the spheroid and valve gap and valve seat, an end between the spheroid pass valve body and the valve rod that is connected with spheroid, threeway handle that is connected with the valve rod the other end and the handle steel pipe that is connected with the threeway handle.Between valve body and valve gap; Generally with graphite or the sealing together of PTFE pad, valve body generally also seals with graphite or PTFE filler between valve rod, is unable to undergo switch; Switch number of times more than one; Time leaks once long easily, and seat design is rigid design, operates moment of torsion and valve seal and is difficult to accomplish to take into account.
Summary of the invention
To the deficiency that existing technology exists, the object of the invention provides that a kind of operation moment of torsion is low, the floating ball valve of good seal performance (the low leakage), has advantages such as long service life and good stability.
To achieve these goals, the present invention realizes through following technological scheme:
The present invention includes valve body, valve gap, spheroid, valve seat and valve rod; Valve rod is provided with Gland; The Gland bottom is connected with valve body, and the gap between Gland, valve body and the valve rod three is provided with stem packing, is positioned at the 2nd O type coil support of stem packing below and is installed in the 2nd O type circle on the 2nd O type coil support; Be provided with an O type circle and a Graphite pad between valve body and the valve gap; What valve seat adopted is elastic seat.Reduce the operation moment of torsion, and be two seals between valve body and the valve gap and between valve rod and the valve body, increased sealability.
Also be provided with the gland nut that is used to compress the butterfly spring of Gland and is positioned at the butterfly spring the other end on the above-mentioned valve rod.Thereby compress filler and remain movable load to guarantee the sealing of filler.
What above-mentioned stem packing was specifically adopted is graphite packing.
What above-mentioned the 2nd O type coil support adopted is stainless steel material.
Characteristics such as the seal member material properties that structural design of the present invention is novel, used is good, has good stability, long service life, and fireproof performance is good have accomplished that inner with the extraneous ultralow fugacity of ball valve leaks; The present invention mainly is used in seal request high, and operation is frequent, and disposes place pneumatic or the electric auto-control operational requirements; The elastic seat design, thus requirement reduced to valve body, valve gap and spheroid machining accuracy, reduced the operation moment of torsion.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Each label among the figure: 1, valve body, 2, valve seat, 3, spheroid, the 4, the one O type circle, 5, Graphite pad; 6, double-screw bolt, 7, nut, 8, valve gap, 9, valve rod; 10, the 2nd O type circle, the 11, the 2nd O type coil support, 12, the handle steel pipe, 13, the threeway handle; 14, gland nut, 15, butterfly spring, 16, Gland, 17, stem packing.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, the present invention includes valve body 1, valve gap 8, spheroid 3, valve seat 2, valve rod 9, threeway handle 13 and be used for manually operated handle steel pipe 12.
Valve body 1 links with valve gap 8 can form a cavity, and valve body 1 uses flange to be fastenedly connected through double-screw bolt 6, nut 7 with valve gap 8), spheroid 3 is positioned at the centre of this cavity; Be respectively equipped with elastic seat between valve body 1 and the spheroid 3 and between valve gap 8 and the spheroid 3; Valve rod 9 lower ends are passed valve body 1 and are connected with spheroid 3; Threeway handle 13 is connected with valve rod 9 upper ends, and handle steel pipe 12 is connected with threeway handle 13.
Wherein, stressed beam-shaped structure is adopted in valve seat 2 designs, increases valve seat 2 elastic deformability under stressing conditions, thereby reduces the requirement to valve body 1, valve gap 8 and spheroid 3 machining accuracies, has reduced the operation moment of torsion.
On valve rod 9, be provided with Gland 16 and be positioned at the gland nut 14 that Gland 16 upper ends are used to compress the butterfly spring 15 of Gland 16 and are positioned at butterfly spring 15 upper ends; And Gland 16 bottoms are connected with valve body 1.Be provided with stem packing 17 in the gap between Gland 16, valve body 1 and valve rod 9 threes, be positioned at the 2nd O type coil support 11 below the stem packing 17 and be installed in the 2nd O type circle 10 on the 2nd O type coil support 11.
In the present embodiment; What the 2nd O type coil support 11 adopted is stainless steel material; Inside and outside two the 2nd O type circles 10 are as the primary seal of valve rod 9, when the valve body material is carbon steel, 10 motive sealings of the 2nd O type circle convert into and stainless steel between sealing; And the sealing between the carbon steel converts static seal into, can avoid carbon steel material to cause the inefficacy of the 2nd O type circle 10 sealings because of getting rusty so effectively.Simultaneously, also be provided with stem packing 17 as the secondary sealing in second road.
Between valve body 1 and valve gap 8, be provided with an O type circle 4 and Graphite pad 5 (being two seals).This structural design sealing is reliable, and good seal performance can reach the low A level sealing that requires of leaking.
In the time will closing ball valve, pull handle steel pipe 12, it drives valve rod 9 through threeway handle 13 and rotates; Valve rod 9 drives spheroid 3 and rotates, and realizes the opening and closing of ball valve, in this process; Owing to adopted the elastic seat design; Make the present invention both guarantee that valve can guarantee the valve excellent sealing performance, in addition simultaneously at lower moment of torsion easy operating; Belleville spring, stem packing 17 and the 2nd O type coil support 11 and the 2nd O type circle 10 through having automatic adjusting decrement function seal, and have realized the seal request that ultralow fugacity is revealed.
In the present embodiment, what stem packing 17 was specifically adopted is graphite packing.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (4)
1. the one kind low low floating ball valve that leaks of operation moment of torsion comprises valve body (1), valve gap (8), spheroid (3), valve seat (2) and valve rod (9), it is characterized in that,
Said valve rod (9) is provided with Gland (16); Said Gland (16) bottom is connected with valve body (1), and the gap between said Gland (16), valve body (1) and valve rod (9) three is provided with stem packing (17), is positioned at the 2nd O type coil support (11) of stem packing (17) below and is installed in the 2nd O type circle (10) on the 2nd O type coil support (11);
Be provided with an O type circle (4) and Graphite pad (5) between said valve body (1) and the valve gap (8);
What said valve seat (2) adopted is elastic seat.
2. the low floating ball valve that leaks of low operation moment of torsion according to claim 1; It is characterized in that, also be provided with the butterfly spring (15) that is used to compress Gland (16) on the said valve rod (9) and be positioned at the gland nut (14) of butterfly spring (15) the other end.
3. the low floating ball valve that leaks of low operation moment of torsion according to claim 1 and 2 is characterized in that what said stem packing (17) was specifically adopted is graphite packing.
4. the low floating ball valve that leaks of low operation moment of torsion according to claim 1 and 2 is characterized in that what said the 2nd O type coil support (11) adopted is stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101066740A CN102620005A (en) | 2012-04-13 | 2012-04-13 | Low-operating torque and low-leakage floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101066740A CN102620005A (en) | 2012-04-13 | 2012-04-13 | Low-operating torque and low-leakage floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102620005A true CN102620005A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101066740A Pending CN102620005A (en) | 2012-04-13 | 2012-04-13 | Low-operating torque and low-leakage floating ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102620005A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808962A (en) * | 2012-08-29 | 2012-12-05 | 昆山维萨阀门有限公司 | Floating ball valve |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762301A (en) * | 1987-02-06 | 1988-08-09 | Whitey Co. | Compact multi-service ball valve |
| US5577709A (en) * | 1995-10-17 | 1996-11-26 | Henry Valve Company | Stem seal configuration for ball valves |
| US5906354A (en) * | 1998-01-12 | 1999-05-25 | Sigma Scientific Technology, Inc. | Ball valve for lethal gas or fluid service |
| CN2327853Y (en) * | 1997-08-15 | 1999-07-07 | 龚益珊 | Stop valve with plunger |
| DE4414243B4 (en) * | 1994-04-23 | 2004-04-22 | Schmitz, Rolf, Dipl.-Ing. | ball valve |
| CN201090428Y (en) * | 2007-08-23 | 2008-07-23 | 天津市天工工程机械有限公司 | Reciprocating high-pressure plunger pump sealing device |
| CN201487284U (en) * | 2009-07-10 | 2010-05-26 | 范宏 | Novel fireproof ball valve |
| CN201588966U (en) * | 2009-12-25 | 2010-09-22 | 昆山维萨阀门有限公司 | Ultralow temperature ball valve |
| CN201723767U (en) * | 2010-07-26 | 2011-01-26 | 苏州工业园区思达德阀门有限公司 | Floating ball valve |
| CN201944325U (en) * | 2011-01-20 | 2011-08-24 | 浙江凯意得阀门有限公司 | Ball valve |
| CN202510747U (en) * | 2012-04-13 | 2012-10-31 | 江苏泰伯铸造有限公司 | Low-operating-torque low-leakage floating ball valve |
-
2012
- 2012-04-13 CN CN2012101066740A patent/CN102620005A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4762301A (en) * | 1987-02-06 | 1988-08-09 | Whitey Co. | Compact multi-service ball valve |
| DE4414243B4 (en) * | 1994-04-23 | 2004-04-22 | Schmitz, Rolf, Dipl.-Ing. | ball valve |
| US5577709A (en) * | 1995-10-17 | 1996-11-26 | Henry Valve Company | Stem seal configuration for ball valves |
| CN2327853Y (en) * | 1997-08-15 | 1999-07-07 | 龚益珊 | Stop valve with plunger |
| US5906354A (en) * | 1998-01-12 | 1999-05-25 | Sigma Scientific Technology, Inc. | Ball valve for lethal gas or fluid service |
| CN201090428Y (en) * | 2007-08-23 | 2008-07-23 | 天津市天工工程机械有限公司 | Reciprocating high-pressure plunger pump sealing device |
| CN201487284U (en) * | 2009-07-10 | 2010-05-26 | 范宏 | Novel fireproof ball valve |
| CN201588966U (en) * | 2009-12-25 | 2010-09-22 | 昆山维萨阀门有限公司 | Ultralow temperature ball valve |
| CN201723767U (en) * | 2010-07-26 | 2011-01-26 | 苏州工业园区思达德阀门有限公司 | Floating ball valve |
| CN201944325U (en) * | 2011-01-20 | 2011-08-24 | 浙江凯意得阀门有限公司 | Ball valve |
| CN202510747U (en) * | 2012-04-13 | 2012-10-31 | 江苏泰伯铸造有限公司 | Low-operating-torque low-leakage floating ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808962A (en) * | 2012-08-29 | 2012-12-05 | 昆山维萨阀门有限公司 | Floating ball valve |
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Application publication date: 20120801 |