CN102221096A - All-metal bidirectional eccentric ball valve - Google Patents

All-metal bidirectional eccentric ball valve Download PDF

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Publication number
CN102221096A
CN102221096A CN2010101470114A CN201010147011A CN102221096A CN 102221096 A CN102221096 A CN 102221096A CN 2010101470114 A CN2010101470114 A CN 2010101470114A CN 201010147011 A CN201010147011 A CN 201010147011A CN 102221096 A CN102221096 A CN 102221096A
Authority
CN
China
Prior art keywords
valve
spheroid
hard alloy
alloy layer
valve seat
Prior art date
Application number
CN2010101470114A
Other languages
Chinese (zh)
Inventor
孙功珍
金理凡
Original Assignee
京东大型阀门有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 京东大型阀门有限公司 filed Critical 京东大型阀门有限公司
Priority to CN2010101470114A priority Critical patent/CN102221096A/en
Publication of CN102221096A publication Critical patent/CN102221096A/en

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Abstract

The invention discloses an all-metal bidirectional eccentric ball valve comprising a valve body, a fixed shaft, a sphere, a valve rod and an upper sealing seat, wherein the valve body is connected with a valve cover by a bolt, the sphere is clamped in the valve body in a suspension way by the fixed shaft and the valve rod, valve seats are arranged at two sides of the sphere respectively, one valve seat is arranged at the inner side of the valve cover, the other valve seat is arranged at the inner side of the valve body, the two valve seats are respectively provided with a hard alloy layer, the sphere is provided with a hard alloy layer, the hard alloy layer of the valve seat is arranged at the inner side of the valve seat, and the hard alloy layer of the sphere is arranged on the radial outer edge of the sphere, opposite to the hard alloy layer of the valve seat. The all-metal bidirectional eccentric ball valve has the beneficial effects that the structure design is simple and reasonable, the manufacturing is simple and convenient, the technology is simple, the cost is low, and the sealing is free of leakage.

Description

A kind of all-metal reversible eccentric ball valve
Technical field
The present invention relates to the ball valve technical field, especially a kind of all-metal reversible eccentric ball valve.
Background technique
The patent No. be 200710091277X's " reduced bidirectional strength closed envelope high-temperature ball valve ", its structural feature is: dress spheroid three assemblies in the spherical shell, its wedge-type spheroid is placed in the middle, with T shape skewed slot left and right sides ball clack is linked to be spheroid; Last lower valve rod is fixedlyed connected with the wedge-type spheroid, for location and 90 ° of rotations; Upper valve rod is by copper nut, bearing unit, and at the valve body upside, by the handwheel rotary opening and closing, sealing surface is that built-up welding seals firmly, is used for high temperature, high pressure aggressive medium.There is not friction in the opening process between sealing surface, long service life, required moment is little, and the switching time is short.Its technology is paid attention to the reliability of abbreviation structure and valve work, and the abbreviation structure is because the program sleeve is arranged on the downside of valve body, not only simplifies the valve upper structure, also valve body itself is saved the big flange of downside, and corresponding link.From wedge-type spheroid extruding ball clack, when being in sealing state, change in the process of unlatching, because of each other very big positive pressure being arranged on the inclined-plane, can cause and can't throw off and block valve, setting sleeve is set can blocks ball clack and follow and move, make the valve reliable operation, be beneficial in medium and small valve and generally adopt, reach the fixedly ball valve of spheroid, the market prospects that tool is good to replace the straight journey gate valve.But this product has the following disadvantages in making and using:
1, spheroid three assembly manufacture difficulty are big, the cost height.
2, spheroid three assemblies guiding is easily polluted, can be stuck.
3, spheroid three assembly volumes are big, then the cost height.
4, part increases, complex process.
5, sealability is than whole spherical aberration.
6, go up sealing and adopt filler, still moment of torsion is bigger.
Above deficiency not only makes this technical products be difficult to produce in batches on a large scale, more makes it be difficult to farthest be promoted, and the deficiency in using also is difficult to satisfy the demands.And the present invention can overcome and solve above-mentioned substantial problem.
Summary of the invention
The objective of the invention is, the above-mentioned deficiency at existing ball valve provides a kind of all-metal reversible eccentric ball valve, and it has, and manufacturing is simple and easy, and technology is simple, and cost is low, the advantage of good seal performance.
In order to reach above-mentioned purpose of design, the technical solution used in the present invention is as follows:
A kind of all-metal reversible eccentric ball valve, comprise valve body, stationary axle, valve gap, spheroid, valve rod, upper seal support, spanner, valve body one side sealing interlocking valve gap, the unsettled spheroid that inserts and puts in the valve body, described spheroid is interposed in the valve body by stationary axle and the valve rod that is oppositely arranged on the valve body lumen wall, the spheroid both sides are respectively equipped with valve seat, the valve seat of spheroid one side is arranged on the valve gap inboard, pass through welded seal between valve seat and the valve gap, the valve seat of described spheroid opposite side is arranged on the valve body inboard, and by welded seal, described spheroid is the integral bidirectional eccentric structure between valve seat and the valve body, two valve seats are the bidirectional eccentric structure, and spheroid equates with the offset of two valve seats; The described inboard pile-up welding hard alloy layer of valve seat that is welded on the valve gap is welded on the inboard pile-up welding hard alloy layer of valve seat on the valve body; Described spheroid is the hard alloy layer opposite position pile-up welding hard alloy layer on cylindrical and the valve seat radially.
Described stationary axle bolt is in the lower shaft hole of valve body, the junction plane built-up welding sealing strip of valve body lower shaft hole and stationary axle, the stationary axle end passes the chamber wall overhead of valve body in the axis hole of spheroid downside, the terminal socket Lower shaft sleeve of stationary axle, insert and put cushion block between the axis hole of stationary axle end and spheroid downside, described stationary axle is a hollow-core construction, be nested with decorative pearl on top of an official cap polished rod in the stationary axle, overhead steel ball in the V-type groove of decorative pearl on top of an official cap polished rod upper end, steel ball is arranged between decorative pearl on top of an official cap polished rod upper end and the cushion block, described decorative pearl on top of an official cap polished rod lower end is provided with screw fastening and is connected on the interior interior hexagonal flush end Cock screw that is used to regulate the spheroid position of stationary axle, and described interior hexagonal flush end Cock screw downside is provided with the hexagonal spiro plug of interlocking on stationary axle.
Described valve rod lower end card withstands in the draw-in groove of spheroid upside, be provided with spring between valve rod lower end and the spheroid, between described valve rod and the valve body lumen wall Upper shaft sleeve is set, the valve rod upper end is provided with the built-up welding sealing strip, and upper seal support and valve rod are between the two by sealing strip contact seal; The junction plane built-up welding sealing strip of described valve body upper shaft hole inboard and upper seal support.
The beneficial effect of all-metal reversible eccentric ball valve of the present invention is: structural design is simple, rationally, makes simple and easyly, and technology is simple, and cost is low; The junction of each parts of ball valve does not all have nonmetallic material, can realize effectively the control requirement of high temperature, high pressure, high parameter performance fluid is reached the metallic seal zero leakage, open and close free and relaxedly, easy to use, meet customer need, help the popularization of product, promote industry development.
Description of drawings
Fig. 1 is the structural representation of the described all-metal reversible eccentric ball valve of the embodiment of the invention.
Among the figure
1, valve body; 2, valve gap; 3, valve seat; 4, hard alloy layer; 5, spheroid; 6, Lower shaft sleeve; 7, valve rod; 8, upper seal support; 9, spanner; 10, interior hexagonal flush end Cock screw; 11, stationary axle; 12, decorative pearl on top of an official cap polished rod; 13, steel ball; 14, cushion block; 15, Upper shaft sleeve; 16, spring; 17, location piece.
Embodiment
As shown in Figure 1, the described all-metal reversible eccentric ball valve of the embodiment of the invention, comprise valve body 1, stationary axle 11, valve gap 2, spheroid 5, valve rod 7, upper seal support 8, described valve body 1 passes on left stud and hexagon nut locking valve gap 2, sealing forms cavity between valve body 1 and the valve gap 2, in the described valve body 1 by stationary axle 11 and the valve rod 7 unsettled spheroids 5 that insert and put, described spheroid 5 left and right sides are respectively equipped with valve seat 3, spheroid 5 is integral bidirectional eccentric structures, two valve seats 3 are the bidirectional eccentric structure, spheroid 5 equates with the offset of two valve seats 3, opens and closes easily laborsavingly, and sealability is reliable; The valve seat 3 in described spheroid 5 left sides is welded on valve gap 2 inboards, makes to seal between valve seat 3 and the valve gap 2, and the valve seat 3 on described spheroid 5 right sides is welded on valve body 1 inboard, makes to seal between valve seat 3 and the valve body 1; The described valve seat 3 inboard pile-up welding hard alloy layers 4 that are welded on the valve gap 2 are welded on the valve seat 3 inboard pile-up welding hard alloy layers 4 on the valve body 1; Described spheroid 5 cylindricals and valve seat 3 relative welding hard alloy layers 4.
The lower shaft hole of described valve body 1 downside and stationary axle 11 form static seal by overlay cladding, stationary axle 11 ends pass the chamber wall overhead of valve body 1 in the axis hole of spheroid 5 downsides, and to spheroid 5 location, stationary axle 11 terminal socket Lower shaft sleeves 6, insert and put cushion block 14 between the axis hole of stationary axle 11 ends and spheroid 1 downside, described stationary axle 11 is a hollow-core construction, be nested with decorative pearl on top of an official cap polished rod 12 in the stationary axle 11, overhead steel ball 13 in the V-type groove of decorative pearl on top of an official cap polished rod 12 upper ends, steel ball 13 is arranged between decorative pearl on top of an official cap polished rod 12 upper ends and the cushion block 14, described decorative pearl on top of an official cap polished rod 12 lower ends are provided with screw fastening and are connected on interior hexagonal flush end Cock screw 10 in the stationary axle 11, can adjust decorative pearl on top of an official cap polished rod 12 up and down by hexagonal flush end Cock screw 10 in regulating, and then promotion cushion block 14 moves up and down, make the position of spheroid 5 in valve pocket be able to correct location, help the raising of valve seal performance, cushion block 14 on the stationary axle 11 and steel ball 13, make spheroid 5 when transposition, become point (rolling) contact, friction ractor is low, moment of torsion is light, hexagonal flush end Cock screw 10 downsides are provided with the hexagonal spiro plug of interlocking on stationary axle 11 in described, sealing between hexagonal spiro plug and the stationary axle 11.
Stationary axle 11 right sides of described valve body 1 downside are provided with hexagonal spiro plug, seal between hexagonal spiro plug and the valve body 1 chamber wall.
Described valve body 1 upside and the stationary axle 11 relative valve rods 7 that are nested with, valve rod 7 lower end cards withstand in the draw-in groove of spheroid 5 upsides, be provided with spring 16 between valve rod 7 lower ends and the spheroid 5, can overcome valve rod 7 deadweights and go up the necessary specific pressure problem of sealing, alleviated keying moment by spring 16; Between described valve rod 7 upper ends and the valve body 1 chamber wall Upper shaft sleeve 15 is set, described upper seal support 8 forms static seal with the equal built-up welding sealing strip of valve body 1 between the two, contact by sealing strip between upper seal support 8 and the valve rod 7 and form dynamic and static sealing, sealing strip between upper seal support 8 and the valve rod 7 utilizes and compresses into the row sealing in the body cavity, more reliable, on valve body 1, described upper seal support 8 upsides connect spanner 9 by location piece 17 to described upper seal support 8 by the socket head screw interlocking.
This embodiment is the preferred embodiments of the present invention, can not limit the present invention, and concrete every right is defined by the claims.

Claims (5)

1. all-metal reversible eccentric ball valve, comprise valve body, stationary axle, valve gap, spheroid, valve rod, upper seal support, sealing interlocking valve gap on the described valve body, the unsettled spheroid that inserts and puts in the valve body, spheroid places in the valve body by stationary axle and valve lever clamp, stationary axle is arranged in the lower shaft hole of valve body, valve rod is arranged on valve body top, the valve rod upside is provided with upper seal support, described spheroid both sides are respectively equipped with valve seat, and a valve seat is arranged on the valve gap inboard, and another valve seat is arranged on the valve body inboard, it is characterized in that: be respectively equipped with hard alloy layer on two valve seats, hard alloy layer is set on the spheroid.
2. all-metal reversible eccentric ball valve according to claim 1 is characterized in that: the hard alloy layer on the valve seat is arranged on the valve seat inboard; Hard alloy layer on the spheroid is arranged on the hard alloy layer opposite position on spheroid radially outer edge and the valve seat.
3. all-metal reversible eccentric ball valve according to claim 1 and 2 is characterized in that: the hard alloy layer built-up welding on the valve seat is on valve seat, and the hard alloy layer built-up welding on the spheroid is on spheroid; One valve seat is welded on the valve body inboard, and another valve seat is welded on the valve gap inboard; The junction plane built-up welding sealing strip of the lower shaft hole of described valve body and stationary axle; The junction plane built-up welding sealing strip of the upper shaft hole of described valve body and upper seal support; Built-up welding sealing strip between valve rod and the upper seal support.
4. all-metal reversible eccentric ball valve according to claim 1, it is characterized in that: insert and put cushion block between described stationary axle end and the spheroid, be nested with decorative pearl on top of an official cap polished rod in the stationary axle, decorative pearl on top of an official cap polished rod upper end overhead steel ball, steel ball is arranged between decorative pearl on top of an official cap polished rod upper end and the cushion block, and described decorative pearl on top of an official cap polished rod lower end is provided with the interior hexagonal flush end Cock screw that is used to regulate the spheroid position.
5. all-metal reversible eccentric ball valve according to claim 1 is characterized in that: be provided with spring between valve rod lower end and the spheroid.
CN2010101470114A 2010-04-15 2010-04-15 All-metal bidirectional eccentric ball valve CN102221096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101470114A CN102221096A (en) 2010-04-15 2010-04-15 All-metal bidirectional eccentric ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101470114A CN102221096A (en) 2010-04-15 2010-04-15 All-metal bidirectional eccentric ball valve

Publications (1)

Publication Number Publication Date
CN102221096A true CN102221096A (en) 2011-10-19

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Family Applications (1)

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CN (1) CN102221096A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102654202A (en) * 2012-04-20 2012-09-05 浙江欧维克阀门有限公司 High-temperature metal hard seal ball valve for granular media
CN102788170A (en) * 2012-08-21 2012-11-21 上海开维喜阀门集团有限公司 Valve seat and valve body all-metal sealing structure
CN103613029A (en) * 2013-11-19 2014-03-05 枣庄矿业(集团)有限责任公司柴里煤矿 Winch interlocking valve limiting device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157190A (en) * 1960-05-26 1964-11-17 Cameron Iron Works Inc Ball valve
US3705707A (en) * 1971-07-13 1972-12-12 Domer Scaramucci Self-aligning trunnion ball valve
GB2143930A (en) * 1983-07-21 1985-02-20 Mapegaz Remati Sa Plug valves
CN87203530U (en) * 1987-03-14 1988-08-17 江苏省启东阀门厂 Ball valve for unloading ash-like articks
CN2214570Y (en) * 1995-03-01 1995-12-06 刘宝璋 3-way cock
JP2000240823A (en) * 1999-02-25 2000-09-08 Kubota Corp Ball shaped valve element support structure for ball valve
CN201265663Y (en) * 2008-05-14 2009-07-01 上海阀门厂有限公司 Screwing type hard seal ball valve
CN201810804U (en) * 2010-04-15 2011-04-27 京东大型阀门有限公司 All-metal bidirectional eccentric ball valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157190A (en) * 1960-05-26 1964-11-17 Cameron Iron Works Inc Ball valve
US3705707A (en) * 1971-07-13 1972-12-12 Domer Scaramucci Self-aligning trunnion ball valve
GB2143930A (en) * 1983-07-21 1985-02-20 Mapegaz Remati Sa Plug valves
CN87203530U (en) * 1987-03-14 1988-08-17 江苏省启东阀门厂 Ball valve for unloading ash-like articks
CN2214570Y (en) * 1995-03-01 1995-12-06 刘宝璋 3-way cock
JP2000240823A (en) * 1999-02-25 2000-09-08 Kubota Corp Ball shaped valve element support structure for ball valve
CN201265663Y (en) * 2008-05-14 2009-07-01 上海阀门厂有限公司 Screwing type hard seal ball valve
CN201810804U (en) * 2010-04-15 2011-04-27 京东大型阀门有限公司 All-metal bidirectional eccentric ball valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102654202A (en) * 2012-04-20 2012-09-05 浙江欧维克阀门有限公司 High-temperature metal hard seal ball valve for granular media
CN102654202B (en) * 2012-04-20 2016-08-10 欧维克集团有限公司 High-temperature metal hard seal ball valve for granular media
CN102788170A (en) * 2012-08-21 2012-11-21 上海开维喜阀门集团有限公司 Valve seat and valve body all-metal sealing structure
CN103613029A (en) * 2013-11-19 2014-03-05 枣庄矿业(集团)有限责任公司柴里煤矿 Winch interlocking valve limiting device

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Application publication date: 20111019