CN1800684A - Valve plate structure and gate valve - Google Patents
Valve plate structure and gate valve Download PDFInfo
- Publication number
- CN1800684A CN1800684A CN 200610011248 CN200610011248A CN1800684A CN 1800684 A CN1800684 A CN 1800684A CN 200610011248 CN200610011248 CN 200610011248 CN 200610011248 A CN200610011248 A CN 200610011248A CN 1800684 A CN1800684 A CN 1800684A
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- Prior art keywords
- valve
- gate valve
- gate
- spool
- board structure
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Abstract
The invention relates to a gate valve which comprises a valve body, a valve rod, a valve plate structure, a gate valve switch, two valve bases and two sealing cushions on two valve bases. Wherein, the valve body is connected to the valve base via screw thread; the valve plate structure comprises two valve plates; a valve core between them; a top part; several ball holes on the valve core; the balls in each ball holes; several ball concaves on one side of said valve plate while the top part via the match between balls and ball concaves can open and retract the valve plate; a retract part comprising several magnetic holes or spring holes on the valve core; and magnetic irons or springs in said magnetic holes or spring holes. Said retract part can support power to retracting the valve plate and keeping this retracting condition when the gate valve is opened.
Description
Technical field
The present invention relates to a kind of gate valve, the valve plate of this gate valve adopts the dull and stereotyped valve plate of bracing type, is used for cutting off or opening the fluid passage, realizes closing or opening of pipeline.
Background technique
Plate valve is that a kind of closure member is the slide-valve of parallel valve plate.Its closure member can make the single valve plate or have the bivalve plate of tension structure therebetween.Fig. 1 cuts for the part of the gate valve of prior art and schemes, as shown in Figure 1, the key component of the gate valve of prior art is made up of two valve plates 101, wedge-type structure 102 or spring 103 are equipped with in the centre, the effect of wedge-type structure or spring is two sealing surface sliding contacts of maintenance and import and export and produces seal pressure, to keep entrance end to seal, belong to two-sided forced seal.This gate valve boundary dimension is bigger, in opening-closing process, relative friction is arranged between sealing surface, and it is bigger to wear and tear, and occurs the abrasive phenomenon of sealing surface easily, occurs the problem of leakage inevitably, the working life of the gate valve of shortening.Simultaneously, the bivalve plate gate valve of spring is equipped with in the centre, and pressure medium is not enough to overcome spring force when low pressure, makes two-sided forced seal, but when high pressure, pressure medium can overcome spring force, promotes valve plate to outlet end, has just become the single face forced seal.
Existing plate valve exists serious deficiency and defective, when pressure medium is low, the valve plate sealing and sealing force be not enough to reach satisfactory sealing, it is opposite when pressure medium is high, often keying just may make sealing surface wear excessive, leaks thereby produce, and shortens the working life of gate valve.
Summary of the invention
For solving above-mentioned problems of the prior art, the purpose of this invention is to provide a kind of valve board structure and gate valve, can increase the sealability of gate valve under the low-pressure situation, solve the leakage problem of gate valve when low pressure.Reduce the friction between valve plate and the valve seat insert simultaneously, increase the working life of gate valve.
To achieve these goals, the invention provides a kind of valve board structure of gate valve, this valve board structure comprises the spool between two valve plates and two valve plates.Also be formed with in this valve board structure: an overhead portion, comprise a plurality of spherical hole that is arranged on the spool, place a spheroid in each hole, and a plurality of bulb-shaped recess that are arranged at described valve plate one side, this overhead portion cooperates by described spheroid and bulb-shaped recess, can make valve plate open and shrink to both sides; One contraction flow region comprises a plurality of magnet openings or the spring eye that are arranged on the spool, and is positioned over magnet or spring in described magnet opening or the spring eye, and this contraction flow region provides power for valve plate inwardly shrinks, and keeps the contraction state of valve plate under the gate valve opening state.
Above-mentioned valve board structure is characterized in that, the described a plurality of spherical hole that is arranged on the spool is symmetrical distribution.Described spheroid can adopt steel ball.
Above-mentioned valve board structure is characterized in that, the described a plurality of magnet openings that are arranged on the spool are symmetrical distribution.
The present invention also provides a kind of gate valve, adopts above-mentioned valve board structure, also comprises the sealing gasket on a valve body, a valve rod, a gate valve switch device, two valve seats and two valve seats in addition.
Above-mentioned gate valve is characterized in that, described valve body is the cavity of gate valve, and described valve board structure is placed in described valve body and can moves in valve body; Described valve body is for being the cuboid of circular arc up and down, and the top has a valve neck, and described valve neck is provided with step hole, is used for fixing valve rod and places the gate valve external sealed; The inside of described valve body has and is the cuboid space of circular arc up and down.
Above-mentioned gate valve is characterized in that, described two valve seats and described valve body are by being threaded.
Above-mentioned gate valve is characterized in that, on described valve plate one side and the spool a plurality of guiding grooves is set, and wherein correspondingly places many guide fingers, for described valve board structure motion provides guiding.
Above-mentioned gate valve is characterized in that, a plurality of guiding grooves on the described spool are for being symmetrical arranged.
Above-mentioned gate valve is characterized in that, the opposite side of described valve plate is provided with step, and described ledge surface is close to the sealing gasket on the described valve seat.
Above-mentioned gate valve is characterized in that, described spool is for being the cuboid of circular arc up and down, and the centre is a groove, and described groove top is provided with a step, and described step is provided with a cylindrical body, and described internal thread is arranged on the described cylindrical body.
Above-mentioned gate valve is characterized in that, described valve rod is the cylindrical body of stepped shape, and the bottom is provided with outside thread, is meshing with each other with internal thread on the described spool, and described valve board structure can be moved up and down.
Above-mentioned gate valve is characterized in that, described internal thread and outside thread are square threaded form.
Above-mentioned gate valve is characterized in that, described gate valve switch device comprises a handwheel, is connected with described valve rod, is used to open or close gate valve; And a gate valve switch display unit, be used to show the switch degree of gate valve.
Above-mentioned gate valve is characterized in that, described gate valve switch display unit adopts earthquake-resistant structure, and a magnetic indicator is housed on its instrument panel, by with valve board structure on the interact switch degree of indication gate valve of magnet.
Above-mentioned gate valve is characterized in that, described valve seat has between seal groove and elastic packing little in outer big, and elastomer seal is teflon or rubber material.
Above-mentioned gate valve is characterized in that, in the process of opening, described valve plate inwardly shrinks near spool, and when closing fully, described valve plate outwards opens, and is close to the seal ring on the described valve seat.
Effect of the present invention can increase the sealability of gate valve under the low-pressure situation, solves the leakage problem of gate valve when low pressure, reduces the friction between valve plate and the valve seat insert simultaneously, increases the working life of gate valve.
Description of drawings
Fig. 1 is the partial section of the gate valve of prior art
Fig. 2 is the partial section of gate valve of the present invention;
Fig. 3 is the partial section of the valve board structure of gate valve of the present invention;
Fig. 4 is the decomposition view of gate valve of the present invention.
Wherein, reference character:
101 valve plates, 102 wedge-type structures, 103 springs
1 valve seat, 2 valve board structures, 3 valve bodies
4 gate valve switch indicating devices, 5 valve rods, 6 handwheels
7 liang of valve plate 8 guide fingers 9 steel balls
10 spools, 11 magnet, 13 step surfaces
14 valve base sealing pads
15 glands, 17 " 0 " type circles, 18 " 0 " type ring recess
19 steps, 20 keyways, 21 keyways
Embodiment
The present invention can fully be understood by following embodiment's explanation, make those skilled in the art to finish according to this, yet enforcement of the present invention be not to be limited by the following example.
With reference to Fig. 2 and Fig. 4, Fig. 2 is to be the partial section of gate valve of the present invention; Fig. 4 is the decomposition view of gate valve of the present invention.The gate valve of embodiments of the invention such as Fig. 2 and shown in Figure 4 mainly comprise two valve seats 1, a valve board structure 2, a valve body 3, a gate valve switch indicating device 4, a valve rod 5, a handwheel 6, two valve plates 7, a spool 10, two valve base sealing pads 14.Wherein handwheel 6, are used to open or close gate valve; Valve rod 5 drives its rotation by handwheel 6, thereby promotes or reduction valve board structure 2; Valve body 3 is the cavity of gate valve, and valve board structure 2 moves in valve body 3; Two valve seats 1 are used for and being connected and placing sealing gasket 14 of exterior line.
In the process of rotating handwheel 6 closing gate valves, valve board structure 2 moves downward, valve plate 7 arrives the bottom of valve body at first down, valve plate 7 times is behind the bottom, spool 10 continues to move downward, because the overhead effect of steel ball 9 outwards struts both sides valve plate 7, valve plate 7 is closely contacted with sealing gasket 14 on the valve seat 1, thereby make this gate valve not have that good sealability is also arranged under the situation of pressure.In the process that gate valve is opened, spool 10 at first moves upward, steel ball 9 together moves upward with spool 10, this moment, steel ball 9 lost the overhead effect to valve plate 7, valve plate 7 inwardly shrinks under the effect of magnet 11 simultaneously, thus the sealing gasket 14 that valve plate 7 is broken away from the valve seat 1, and therefore the sealing gasket 14 on valve plate 7 and the valve seat 1 does not rub in the process that opens and closes gate valve, solved that sealing gasket 14 is rubbed and the problem damaged, increased the working life of gate valve.In the process that opens and closes gate valve, indicate the degree of closing of gate valves by gate valve switch indicating device 4.
Being shaped as of valve body 3 is the cuboid of circular arc up and down, the also a bit of cylinder valve neck of top design, design has step hole on the valve neck, is used for fixing valve rod 5 and places the gate valve external sealed, step hole requires to keep good parallelism with the gate valve center, requires processing smooth simultaneously.Valve body 3 inside have and are the cuboid of circular arc up and down, for moving up and down of valve plate assembly provides the space.Valve body 3 bottoms are a cylindrical body, and both sides are designed by internal thread, are used to connect valve seat, the empty good perpendicularity of maintenance that requires of the step on this tapped hole and the valve neck.Each design of valve body both sides has four stiffening ribs.
Valve board structure 2 is made up of two valve plates 7, four guide fingers 8, four steel balls 9, two magnet 11, spools 10.Valve plate 7 is a plectane structure, the design of the outside, one side end face has step, step surface requires to have good flatness and degree of finish, the opposite side design of valve plate 7 has four guiding grooves and four spherical depressions, guiding groove provides guiding for moving up and down of valve plate, spherical depression is used for valve plate and struts laterally, valve plate is retracted near spool 10 positions when steel ball 9 is positioned at spherical depression lowermost end, when steel ball 9 during to spherical depression movement outside, valve plate 7 outwards struts, the step surface 13 of valve plate 7 opposite sides is close to the sealing gasket 14 on the valve seat 1, thereby reaches the excellent sealing effect when the gate valve closed condition.Spool 10 is to be the cuboid of circular arc up and down, the centre is a long strip groove, upper design has a step, design has the cylindrical body of rectangle internal thread on the step, rotate by handwheel 6 rotating band ovable valve stems 5, engagement by valve rod 5 and this rectangle internal thread provides power for valve plate assembly 2 moves up and down again, symmetric arrangement has four guiding grooves on the spool 10, four steel ball holes and two magnet openings, place a guide finger 8 in each guiding groove, for valve plate 7 motions provide guiding, place a steel ball 9 in each steel ball hole, cooperate, reach the purpose that valve plate struts or shrinks to both sides by the spherical depression of steel ball 9 with valve plate 7 one sides.Two blocks of magnet 11 are arranged symmetrically in the magnet opening of spool, for inwardly shrinking, valve plate 7 provides power, and be the contraction state that keeps valve plate in the gate valve opening state, avoid gate valve to rub with sealing gasket 14 on the valve seat 1 opening or close valve plate 7 in the closed procedure, reduce the wearing and tearing of sealing gasket 14, increase the working life of gate valve.
Valve rod 5 is the tall and thin cylindrical of stepped shape, and valve rod 5 bottoms designs has the rectangle outside thread of certain-length, by with spool 10 on thread engagement promote or lowering valve plate structure 2.In the upper design near screw thread two " O " type ring recess 18 are arranged, interior placement " O " type circle 17 is used for the sealing of going up of gate valve.Design has a step 19 on " O " type ring recess, is used for the location of valve rod about in the of 5.Upper design at valve rod 5 has a keyway 20, and interior placement key 21 is used for the location of handwheel 6.
One end of valve seat 1 is connected with valve body 3 by screw thread, and the other end of valve seat directly uses as joint, can be designed to flange, CRJ or other joint forms, is used for and being connected of external lug.On the end face of valve seat 1 one sides design have outer little in big seal groove, can prevent to be washed away behind the sealing gasket 14 indentation sealing ring recess by fluid.
Gate valve switch indicating device 4 is a disc type instrument, but antidetonation is used to indicate the switch degree of gate valve, and a magnetic indicator is housed on the instrument panel, by with valve plate assembly 2 on the interact switch degree of indication gate valve of magnet.Instrument panel 16 is fixed on the valve body 3 by gland 15.Wherein, the earthquake-resistant structure instrument is a filling antidetonation liquid in instrument panel, thereby makes instrument have the function of antidetonation.
Valve plate also adopts spring to shrink, and adds a magnet on spool.
The invention has the advantages that to increase the sealability of gate valve under the low-pressure situation, solves the leakage problem of gate valve when low pressure.Reduce the friction between valve plate and the valve seat insert simultaneously, increase the working life of gate valve.
The present invention must make variations and modifications by those skilled in the art, however the scope that the appended claim institute desire of neither disengaging is protected.
Claims (16)
1, a kind of valve board structure comprises the spool between two valve plates and two valve plates, it is characterized in that, also is formed with in the described valve board structure:
One overhead portion, comprise a plurality of spherical hole that is arranged on the spool, place a spheroid and a plurality of bulb-shaped recess that are arranged at described valve plate one side in each spherical hole, this overhead portion cooperates by described spheroid and bulb-shaped recess, can make valve plate open and shrink to both sides;
One contraction flow region comprises a plurality of magnet openings or the spring eye that are arranged on the spool, and is positioned over magnet or spring in described magnet opening or the spring eye, and this contraction flow region provides power for valve plate inwardly shrinks, and keeps the contraction state of valve plate under the gate valve opening state.
2, the valve board structure of gate valve as claimed in claim 1 is characterized in that, the described a plurality of spherical hole that is arranged on the spool is symmetrical distribution.
3, the valve board structure of gate valve as claimed in claim 1 is characterized in that, the described a plurality of magnet openings that are arranged on the spool are symmetrical distribution.
4, a kind of gate valve, comprise the sealing gasket on a valve body, a valve board structure, a valve rod, a gate valve switch device, two valve seats and two valve seats, wherein said valve board structure comprises the spool between two valve plates and two valve plates, it is characterized in that, also is formed with in the described valve board structure:
One overhead portion, comprise a plurality of spherical hole that is arranged on the spool, place a spheroid and a plurality of bulb-shaped recess that are arranged at described valve plate one side in each hole, spherical hole, this overhead portion cooperates by described spheroid and bulb-shaped recess, can make valve plate open and shrink to both sides;
One contraction flow region comprises a plurality of magnet openings or the spring eye that are arranged on the spool, and is positioned over magnet or spring in the described magnet opening, and this contraction flow region provides power for valve plate inwardly shrinks, and keeps the contraction state of valve plate under the gate valve opening state.
5. gate valve as claimed in claim 4 is characterized in that, described valve body is the cavity of gate valve, and described valve board structure is placed in described valve body and can moves in valve body; Described valve body is for being the cuboid of circular arc up and down, and the top has a valve neck, and described valve neck is provided with step hole, is used for fixing valve rod and places the gate valve external sealed; The inside of described valve body has and is the cuboid space of circular arc up and down.
6, gate valve as claimed in claim 4 is characterized in that, described two valve seats and described valve body are by being threaded or cast inblock.
7, gate valve as claimed in claim 4 is characterized in that, on described valve plate one side and the spool a plurality of guiding grooves is set respectively, wherein correspondingly places many guide fingers, for described valve board structure motion provides guiding.
8, gate valve as claimed in claim 4 is characterized in that, a plurality of guiding grooves on the described spool are for being symmetrical arranged.
9, gate valve as claimed in claim 4 is characterized in that, the opposite side of described valve plate is provided with step, and described ledge surface is close to the sealing gasket on the described valve seat.
10, gate valve as claimed in claim 4 is characterized in that, described spool is for being the cuboid of circular arc up and down, the centre is a groove, described groove top is provided with a step, and described step is provided with a cylindrical body, and described internal thread is arranged on the described cylindrical body.
11, gate valve as claimed in claim 4 is characterized in that, described valve rod is the cylindrical body of stepped shape, and the bottom is provided with outside thread, is meshing with each other with internal thread on the described spool, and described valve board structure can be moved up and down.
12, gate valve as claimed in claim 4 is characterized in that, described internal thread and outside thread are square threaded form.
13, gate valve as claimed in claim 4 is characterized in that, described gate valve switch device comprises a handwheel, is connected with described valve rod, is used to open or close gate valve; And a gate valve switch display unit, be used to show the switch degree of gate valve.
14, gate valve as claimed in claim 4 is characterized in that, described gate valve switch display unit adopts earthquake-resistant structure, and a magnetic indicator is housed on its instrument panel, by with described valve board structure on the interact switch degree of indication gate valve of magnet.
15, gate valve as claimed in claim 4 is characterized in that, described valve seat has between seal groove and elastic packing little in outer big, and elastomer seal is teflon or rubber material.
16, gate valve as claimed in claim 4 is characterized in that, in the process of opening, described valve plate inwardly shrinks near spool, and when closing fully, described valve plate outwards opens, and is close to the seal ring on the described valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100112483A CN100360841C (en) | 2006-01-20 | 2006-01-20 | Valve plate structure and gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100112483A CN100360841C (en) | 2006-01-20 | 2006-01-20 | Valve plate structure and gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1800684A true CN1800684A (en) | 2006-07-12 |
| CN100360841C CN100360841C (en) | 2008-01-09 |
Family
ID=36810834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100112483A Expired - Fee Related CN100360841C (en) | 2006-01-20 | 2006-01-20 | Valve plate structure and gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100360841C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968124A (en) * | 2010-11-01 | 2011-02-09 | 安徽红星阀门有限公司 | Valve plate framework of resilient seated gate valve |
| CN104089039A (en) * | 2014-07-25 | 2014-10-08 | 福建省海洋阀门科技有限公司 | Improved anti-theft valve |
| CN109169587A (en) * | 2018-08-22 | 2019-01-11 | 湖南米笠农业科技有限公司 | A kind of irrigation trolley that liquor strength is easily adjusted |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2793831A (en) * | 1954-02-15 | 1957-05-28 | Ohio Injector Company | Gate valves |
| US2802483A (en) * | 1956-03-01 | 1957-08-13 | Allied Chem & Dye Corp | Hydraulically-operated gate valves |
| US3695578A (en) * | 1969-05-20 | 1972-10-03 | Zimmermann & Jansen Gmbh Fa | Gate valve including fluid operated locking device |
| CN2169001Y (en) * | 1993-07-19 | 1994-06-15 | 乐清县自动化仪表三厂 | Dual-wedge gate valve |
| CN2397319Y (en) * | 1999-11-03 | 2000-09-20 | 盐城市苏盐阀门管件厂 | Gate valve with core-adjusting gate plate |
| CN1322260C (en) * | 2003-10-12 | 2007-06-20 | 张永峰 | Sluice valve flashboard |
-
2006
- 2006-01-20 CN CNB2006100112483A patent/CN100360841C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968124A (en) * | 2010-11-01 | 2011-02-09 | 安徽红星阀门有限公司 | Valve plate framework of resilient seated gate valve |
| CN104089039A (en) * | 2014-07-25 | 2014-10-08 | 福建省海洋阀门科技有限公司 | Improved anti-theft valve |
| CN104089039B (en) * | 2014-07-25 | 2016-08-24 | 福建省海洋阀门科技有限公司 | Improved anti-theft valve |
| CN109169587A (en) * | 2018-08-22 | 2019-01-11 | 湖南米笠农业科技有限公司 | A kind of irrigation trolley that liquor strength is easily adjusted |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100360841C (en) | 2008-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20100220 |