CN103383009A - Pollution-free metal membrane sealed ball valve - Google Patents
Pollution-free metal membrane sealed ball valve Download PDFInfo
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- CN103383009A CN103383009A CN2013103046820A CN201310304682A CN103383009A CN 103383009 A CN103383009 A CN 103383009A CN 2013103046820 A CN2013103046820 A CN 2013103046820A CN 201310304682 A CN201310304682 A CN 201310304682A CN 103383009 A CN103383009 A CN 103383009A
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- valve
- valve seat
- pressure plate
- pollution
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Abstract
The invention relates to a pollution-free metal membrane sealed ball valve which comprises a valve body, a valve seat, a valve cap, a valve rod and a sphere. The valve seat and a sphere sealing surface adopt a hard sealing structure, and the pollution-free metal membrane sealed ball valve is characterized in that the valve seat comprises an elastic membrane, a pressure plate ring and a valve seat support ring; the peripheral edge of the elastic membrane is hermetically welded onto the pressure plate ring; the edge of one side surface of the inner side of the elastic membrane is provided with a sealing surface mutually matched with the sphere, and the other side surface of the inner side of the elastic membrane is matched with one end face of the valve seat support ring in a compressing and sealing manner; an axial spring is mounted between the other end face of the valve seat support ring and a right valve body; the outer circular wall of the valve seat support ring is movably matched with the inner circular wall of the pressure plate ring; the pressure plate ring is hermetically connected with the right valve body through a screw. According to the invention, the pollution of graphite powder generated by a graphitic sealing ring arranged between the valve seat and the valve body in the prior art to a medium is avoided, and the pollution-free metal membrane sealed ball valve has the advantages of sanitation in use, no pollution, excellent sealing reliability and the like, and is suitable for control valves of sanitary pollution-free medium pipelines in medicine, food and other industries.
Description
Technical field
The invention belongs to valve field, particularly about a kind of ball valve.The present invention is applicable to the control valve of the health such as medicine, food, pollution-free medium pipeline.
Background technique
Ball valve is widely used on the medium transport pipeline of every profession and trade because of the advantage such as open-close convenient, flow resistance be little.Its structure comprises valve body, valve seat, valve gap, valve rod, Sealing and assembling set, in order to adapt to worst hot case, valve seat adopts floating valve seat, valve seat and ball seal face adopt hard sealing, avoid valve seat and spheroid high-temperature expansion and stuck, between its floating valve seat and valve channel inwall, the general graphite circle that adopts seals.Its major defect is: when floating valve seat moves, because friction produces powdered graphite, medium is produced pollute between graphite circle and valve channel inwall; The graphite material expansion coefficient is large, the very flexible that the worst hot case lower valve base floats, and the frictional force in opening-closing process between spheroid and sealing surface of seat is large, and is large to sealing surface wear, and sealing reliability is poor.
Summary of the invention
The objective of the invention is the shortcoming that exists for prior art, a kind of health, no-pollution metal diaphragm seal ball valve that sealing reliability is good of using is provided.
technological scheme of the present invention comprises valve body, valve seat, valve gap, valve rod, spheroid, valve seat and ball seal face adopt hard sealing structure, mainly that valve seat is by flexible sheet, pressure plate loop, the valve seat bracing ring forms, the peripheral edge seal welding of this flexible sheet is on pressure plate loop, a lateral edge of flexible sheet inboard has the sealing surface that cooperatively interacts with spheroid, another side coordinates with an end face press seal of valve seat bracing ring, between another end face of valve seat bracing ring and right valve barrel, axle spring is installed, the cylindrical wall of valve seat bracing ring and the inner round wall of pressure plate loop are movingly, pressure plate loop is tightly connected by screw and right valve barrel.
In above technological scheme, be shaped with annular boss in the right side of pressure plate loop, be shaped with the annular groove that the annular boss with pressure plate loop cooperatively interacts in the left side of right valve barrel, in the annular groove bottom, seal washer is installed.
Advantage of the present invention is that valve seat is comprised of flexible sheet, pressure plate loop, valve seat bracing ring, flexible sheet axially is sealed and matched with spheroid and valve seat bracing ring respectively, radially be connected with the pressure plate loop welded seal, the pollution that the powdered graphite of having avoided adopting graphite-seal ring to produce between the valve seat of prior art and valve body produces medium, it uses health, pollution-free, sealing reliability good.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is A place partial structurtes enlarged view in Fig. 1 of the present invention.
Embodiment
no-pollution metal diaphragm seal ball valve as shown in Figure 1, comprise valve body, valve seat, valve gap, valve rod, spheroid 1, valve seat and spheroid 1 sealing surface adopt hard sealing structure, valve seat is by flexible sheet 2, pressure plate loop 4, valve seat bracing ring 3 forms, the peripheral edge seal welding of this flexible sheet 2 is on pressure plate loop 4, a lateral edge of flexible sheet 2 inboards has the sealing surface that cooperatively interacts with spheroid 1, another side coordinates with an end face press seal of valve seat bracing ring 3, axle spring 8 is installed between another end face of valve seat bracing ring 3 and right valve barrel 7, this axle spring 8 is by producing seal preload between 3 pairs of flexible sheets 2 of valve seat bracing ring and spheroid 1, described axle spring 8 is that the elastic force that produces of spring is on the valve channel axial direction.The cylindrical wall of valve seat bracing ring 3 and the inner round wall of pressure plate loop 4 movingly, pressure plate loop 4 is tightly connected by screw 5 and right valve barrel 7, under the pressure medium effect, pressure plate loop 4 compresses flexible sheets 2 and spheroid 1 sealing, reaches high pressure seal result.
Be shaped with annular boss in the right side of pressure plate loop 3, be shaped with in the left side of right valve barrel 7 with pressure plate loop 3 on the annular groove that cooperatively interacts of annular boss, in the annular groove bottom, seal washer 6 is installed, realize valve seat axial seal.Flexible sheet 2 adopts metallic material, as shown in Figure 2.
Screw 5 adopts socket head screw, and the circular hole that passes pressure plate loop 3 is threaded with right valve barrel 7.Medium thrust all acts on screw 5, and frictional force and open and close torque when having reduced valve opening and closing between spheroid and flexible sheet 2 reduce the wearing and tearing of sealing surface, improves sealability.
Claims (2)
1. no-pollution metal diaphragm seal ball valve, comprise valve body, valve seat, valve gap, valve rod, spheroid (1), valve seat and spheroid (1) sealing surface adopts hard sealing structure, it is characterized in that valve seat is by flexible sheet (2), pressure plate loop (4), valve seat bracing ring (3) forms, the peripheral edge seal welding of this flexible sheet (2) is on pressure plate loop (4), an inboard lateral edge of flexible sheet (2) has the sealing surface that cooperatively interacts with spheroid (1), another side coordinates with an end face press seal of valve seat bracing ring (3), between another end face of valve seat bracing ring (3) and right valve barrel (7), axle spring (8) is installed, the inner round wall of the cylindrical wall of valve seat bracing ring (3) and pressure plate loop (4) movingly, pressure plate loop (4) is tightly connected by screw (5) and right valve barrel (7).
2. no-pollution metal diaphragm seal ball valve according to claim 1, it is characterized in that being shaped with annular boss in the right side of pressure plate loop (3), be shaped with the annular groove that cooperatively interacts with the upper annular boss of pressure plate loop (3) in the left side of right valve barrel (7), at annular groove bottom installation seal washer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103046820A CN103383009A (en) | 2013-07-05 | 2013-07-05 | Pollution-free metal membrane sealed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103046820A CN103383009A (en) | 2013-07-05 | 2013-07-05 | Pollution-free metal membrane sealed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103383009A true CN103383009A (en) | 2013-11-06 |
Family
ID=49490885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103046820A Pending CN103383009A (en) | 2013-07-05 | 2013-07-05 | Pollution-free metal membrane sealed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103383009A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382458A (en) * | 2015-11-24 | 2016-03-09 | 山西江淮重工有限责任公司 | Membrane and steam ball valve seat assembly welding tool and assembly welding technology thereof |
| CN106151574A (en) * | 2016-08-19 | 2016-11-23 | 方正阀门集团有限公司 | Ultra-low temperature ball valve valve base sealing structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11344135A (en) * | 1998-06-02 | 1999-12-14 | Kitz Corp | Seal structure for ball valve |
| CN2459492Y (en) * | 2001-01-03 | 2001-11-14 | 吴忠仪表股份有限公司 | Metal hard seal ball valve |
| CN1563758A (en) * | 2004-04-08 | 2005-01-12 | 白龙山 | Hydraulic bellows guidway ball valve |
| CN102418797A (en) * | 2011-06-06 | 2012-04-18 | 白龙山 | High-performance aneroid/piston type ball valve |
| CN202327196U (en) * | 2011-11-27 | 2012-07-11 | 浙江欧斯特泵阀有限公司 | Hard seal ball valve |
| CN202733033U (en) * | 2012-07-09 | 2013-02-13 | 卢超 | All-metal hard sealing type floating ball valve |
| CN203743476U (en) * | 2013-07-05 | 2014-07-30 | 开维喜阀门集团有限公司 | Pollution-free metal membrane seal ball valve |
-
2013
- 2013-07-05 CN CN2013103046820A patent/CN103383009A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11344135A (en) * | 1998-06-02 | 1999-12-14 | Kitz Corp | Seal structure for ball valve |
| CN2459492Y (en) * | 2001-01-03 | 2001-11-14 | 吴忠仪表股份有限公司 | Metal hard seal ball valve |
| CN1563758A (en) * | 2004-04-08 | 2005-01-12 | 白龙山 | Hydraulic bellows guidway ball valve |
| CN102418797A (en) * | 2011-06-06 | 2012-04-18 | 白龙山 | High-performance aneroid/piston type ball valve |
| CN202327196U (en) * | 2011-11-27 | 2012-07-11 | 浙江欧斯特泵阀有限公司 | Hard seal ball valve |
| CN202733033U (en) * | 2012-07-09 | 2013-02-13 | 卢超 | All-metal hard sealing type floating ball valve |
| CN203743476U (en) * | 2013-07-05 | 2014-07-30 | 开维喜阀门集团有限公司 | Pollution-free metal membrane seal ball valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382458A (en) * | 2015-11-24 | 2016-03-09 | 山西江淮重工有限责任公司 | Membrane and steam ball valve seat assembly welding tool and assembly welding technology thereof |
| CN106151574A (en) * | 2016-08-19 | 2016-11-23 | 方正阀门集团有限公司 | Ultra-low temperature ball valve valve base sealing structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131106 |