CN101655159A - Full-seal zero-leakage stop valve - Google Patents
Full-seal zero-leakage stop valve Download PDFInfo
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- CN101655159A CN101655159A CN200910152490A CN200910152490A CN101655159A CN 101655159 A CN101655159 A CN 101655159A CN 200910152490 A CN200910152490 A CN 200910152490A CN 200910152490 A CN200910152490 A CN 200910152490A CN 101655159 A CN101655159 A CN 101655159A
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- valve
- flap
- flap hanger
- valve rod
- hanger
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Abstract
The invention relates to a full-seal zero-leakage stop valve which comprises a valve body, an upper sealing cover, a hand wheel, a valve rod and a valve flap, and a cavity of the stop valve is also internally provided with a valve flap hanger rack, wherein the valve flap is fixed at the lower end of the valve flap hanger rack; the lower end of the valve rod passes through the upper sealing cover and is linked and connected with the valve flap hanger rack to form an axial lifting mechanism of the valve flap hanger rack so as to ensure that a valve seat and the valve flap are in on and off fits;a bellows-shaped elastic telescopic piece is arranged between a valve port of the valve body and the valve flap hanger rack; and both ends of the elastic telescopic piece are respectively connected with the valve port and the valve flap hanger rack so as to separate the valve flap from the upper sealing cover. The invention improves dynamic seal in the prior art into static seal and the elastic telescopic piece separates the valve flap from the upper sealing cover to achieve full seal and zero leakage, thereby greatly improving the sealing property and expanding application fields.
Description
Technical field
The present invention relates to a kind of stop valve, particularly full-seal zero-leakage stop valve.
Background technique
The invention of valve attends by human life with application always closely, produces and work, also the history in thousands of years has been arranged so far.Because the continuous increase of demand, the kind of valve, specification output are constantly increased sharply, and according to incompletely statistics, China has more than 3,000 kind of about 30,000 plurality of specifications of valve at present.
Valve is the important device of transporting fluid, particularly in inflammable, explosive, the poisonous and hazardous danger medium of transporting, to the sealing of safe and reliable consideration to valve, intensity assurance property has proposed strict requirement.
Present stop valve valve gap is connected with bolt, nut with valve body and forms Seal cage, in order to splendid attire by the medium of transporting with provide the stopper flap to open and close activity space.Yet this Seal cage has two leak sources, and one is the joint of valve gap and valve body, for preventing to leak, have to be clipped in the place, slit with sealing gasket and go to block up, and another place is that valve rod is done rotation (formula is toward complex line) and moved and produced matching gap too at the stuffing box place.Also have to use the filler leak stopping.Here the valve of these conventional constructions is called the seam valve is arranged.Go to keep sealability for the method that ensures safety, can only lean on the maintain and replace filler in the using process.When the transporting medium temperature raises, the pressure increase makes that the working environment of stop valve is very harsh, in order to guarantee being perfectly safe of transporting hazmat, the most basic way is cancelled this two leak sources exactly.
Summary of the invention
The objective of the invention is to provides a kind of stop valve of seamless full-seal zero-leakage for overcoming the deficiencies in the prior art.
In order to achieve the above object, technical solution provided by the invention is: a kind of full-seal zero-leakage stop valve, comprise valve body, upper cover, handwheel, valve rod and flap, it is characterized in that: described stop valve also is provided with the flap hanger, described flap hanger Spielpassung is arranged in the valve pocket that forms between upper cover and the valve body, described flap is fixed on the lower end of flap hanger, described valve rod lower end is passed upper cover and flap hanger and is connected and constitutes that the axial elevator mechanism of flap hanger forms flap and valve seat to open and closure cooperates, be provided with corrugated tube shape elastic telescopic spare between the valve port of described valve body and the flap hanger, described elastic telescopic spare two ends are tightly connected with valve port and flap hanger respectively flap and upper cover are separated.
Compared with prior art, the invention has the beneficial effects as follows: by having set up a flap hanger and being different from the Placement of prior art, rotation motion to linear, make the flap hanger drive flap and only do the vertical axial lifting, simultaneously between the valve port of valve body and flap hanger, be provided with corrugated tube shape elastic telescopic spare, elastic telescopic spare two ends are tightly connected with valve port and flap hanger respectively flap and upper cover are separated, motive sealing of the prior art is improved to static seal, elastic telescopic spare with can adopt being connected of valve port and flap hanger fixedly connected as the welding etc., can reach full-seal zero-leakage, greatly improve sealability, enlarged application.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing 1 is the specific embodiment of the invention 1 a structure sectional view;
Accompanying drawing 2 is the specific embodiment of the invention 2 structure sectional views;
Embodiment
Concrete enforcement 1: as shown in Figure 1, full-seal zero-leakage stop valve still comprises valve body 1, upper cover 2, handwheel 3, valve rod 4 and flap 5.Upper cover 2 is preferably tubbiness, and the valve port diameter on diameter and the valve body 1 matches up at the bucket end, make with valve body 1 between the valve pocket of formation enough spaces are arranged, being connected between upper cover 2 and the valve body 1 can be that flange connects, and also can be welding, adopts the latter among the present invention.The center on upper cover 2 tops is provided with valve rod hole, the position corresponding with valve rod hole is provided with nut 6 on the upper cover 2, and valve rod 4 tops are provided with the swivel nut 7 that matches with nut 6, and valve rod 4 is installed on the upper cover 2 by swivel nut 7, nut 6 cooperations, valve rod 4 lower ends enter in the valve pocket, and handwheel 3 is fixed on valve rod 4 upper ends.Also be provided with flap hanger 8 in the valve pocket, flap hanger 8 is whole cylindrical, top is provided with discoid joint 9, the diameter of discoid joint 9 is greater than the caliber of elastic telescopic spare 10 but less than upper cover 2 internal diameters flap hanger 8 Spielpassung is arranged in the valve pocket that forms between upper cover 2 and the valve body 1, the upper end of flap hanger 8 is provided with the axial blind hole with valve rod 4 lower end Spielpassung, it is relative with valve seat that flap 5 is fixed on the lower end of flap hanger 8, insert in the blind hole valve rod 4 lower ends, being equipped with identical cross section on the relevant position of valve rod 4 surfaces and blind pore wall is that semicircular annular groove 11 is formed the ring-type pipeline space, being provided with a plural number steel ball 12 in the looped pipeline space makes valve rod 4 and flap hanger 8 constitute circumferentially movable being connected of axial restraint, in conjunction with swivel nut 7 on the valve rod 4, nut 6 cooperations are threaded with upper cover 2 and constitute described flap hanger 8 axial elevator mechanisms, rotatablely moving of handwheel 3 become the straight line motion of flap hanger 8, make flap hanger 8 drive flap 5 and only do the vertical axial lifting, corrugated tube shape elastic telescopic spare 10 two ends are tightly connected with valve port and flap hanger 8 respectively flap 5 and upper cover 2 are separated, can take the mode of whole mutually weldering system to be connected between elastic telescopic spare 10 two ends and valve port and the flap hanger 8, eliminate original valve gap and valve body 1 joint gap.The extending amount of corrugated tube shape elastic telescopic spare 10 is greater than flap hanger 8 strokes, and selects for use solid corrosion-resistant material to make.
The working principle of full-seal zero-leakage stop valve: rotate handwheel 3, under swivel nut on the valve rod 47 and nut 6 interact, valve rod 4 is descending, promoting flap hanger 8 by steel ball moves down, rotating elastomer of while, downward compressive deformation, at this moment the closure member flap 5 that is located on the flap hanger 8 moves down, and contacts with sealing surface of seat and has finished closing function.Counterrotating handwheel 3, under swivel nut on the valve rod 47 and nut 6 interacted, valve rod 4 was up, by moving on the steel ball drive flap hanger 8, at this moment the closure member flap 5 that is located on the flap hanger 8 moves with the same, breaks away from sealing surface of seat and finishes, and finishes the valve opening function.
Concrete enforcement 2: the flap hanger 8 axial elevator mechanisms of full-seal zero-leakage stop valve can also be as shown in Figure 2: promptly be provided with valve stem casing 13 on upper cover 2, valve rod 4 lower ends are passed upper cover 2 and are entered in the valve pocket, valve rod 4 and valve stem casing 13 endoporus Spielpassung, being equipped with identical cross section on the relevant position of valve rod 4 surfaces and valve stem casing 13 inner hole walls is that semicircular annular groove 11 is formed the ring-type pipeline space, is provided with a plural number steel ball 12 in the looped pipeline space and makes valve rod 4 and valve stem casing 13 endoporus constitute circumferentially movable being connected of axial restraint; Valve rod 4 lower ends are provided with screw thread, flap hanger 8 upper ends are provided with the axial screw that matches with valve rod 4 lower ends, valve rod 4 is threaded with flap hanger 8, is provided with axially directed structure between flap hanger 8 and the valve cavity wall and equally also can reaches the straight-line purpose that rotatablely moving of handwheel 3 is become flap hanger 8.
The present invention is by being improved to static seal with motive sealing, make that between the valve port of valve body 1 and flap hanger 8 corrugated tube shape elastic telescopic spare 10 being set becomes possibility, stop valve can reach full-seal zero-leakage, greatly improved sealability, enlarge application, can carry poisonous, harmful, easy dangerous medium such as right, explosive and deep-etching gas.
Claims (4)
1, a kind of full-seal zero-leakage stop valve, comprise valve body, upper cover, handwheel, valve rod and stopper flap, it is characterized in that: described stop valve also is provided with the flap hanger, described flap hanger Spielpassung is arranged in the valve pocket that forms between upper cover and the valve body, described flap is fixed on the lower end of flap hanger, described valve rod lower end is passed upper cover and flap hanger and is connected and constitutes that the axial elevator mechanism of flap hanger forms flap and valve seat to open and closure cooperates, be provided with corrugated tube shape elastic telescopic spare between the valve port of described valve body and the flap hanger, described elastic telescopic spare two ends are tightly connected with valve port and flap hanger respectively flap and upper cover are separated.
2, full-seal zero-leakage stop valve according to claim 1, it is characterized in that: the upper end of described flap hanger is provided with the axial blind hole with valve rod lower end Spielpassung, insert in the blind hole valve rod lower end, being equipped with identical cross section on the relevant position of described stem surface and blind pore wall is that semicircular annular groove is formed the ring-type pipeline space, is provided with a plural number steel ball in the described looped pipeline space and makes valve rod and flap hanger constitute circumferentially movable being connected of axial restraint; Described valve rod top is provided with swivel nut, and upper cover is provided with nut, and described valve rod is threaded with upper cover by swivel nut, nut cooperation and constitutes the axial elevator mechanism of described flap hanger.
3, full-seal zero-leakage stop valve according to claim 1, it is characterized in that: described upper cover is provided with valve stem casing, described valve rod lower end is passed and is entered in the valve pocket, valve rod and valve stem casing endoporus Spielpassung, being equipped with identical cross section on the relevant position of described stem surface and valve stem casing inner hole wall is that semicircular annular groove is formed the ring-type pipeline space, is provided with a plural number steel ball in the described looped pipeline space and makes valve rod and valve stem casing endoporus constitute circumferentially movable being connected of axial restraint; Described valve rod lower end is provided with screw thread, described flap hanger upper end is provided with the axial screw that matches with the valve rod lower end, described valve rod is threaded with the flap hanger, is provided with axially directed structure between described flap hanger and the valve cavity wall and constitutes the axial elevator mechanism of described flap hanger.
4, according to claim 1 or 2 or 3 described full-seal zero-leakage stop valves, it is characterized in that: described flap hanger integral body is cylindrical, and top is provided with discoid joint, fixedlys connected with discoid joint with valve port respectively in described elastic telescopic spare two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910152490A CN101655159A (en) | 2009-09-10 | 2009-09-10 | Full-seal zero-leakage stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910152490A CN101655159A (en) | 2009-09-10 | 2009-09-10 | Full-seal zero-leakage stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101655159A true CN101655159A (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910152490A Pending CN101655159A (en) | 2009-09-10 | 2009-09-10 | Full-seal zero-leakage stop valve |
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| Country | Link |
|---|---|
| CN (1) | CN101655159A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244695A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows globe valve with non-rotary valve rod |
| CN103244691A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows stop valve with switch display positions |
| CN103244696A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | External-pressure type bellows globe valve with non-rotating valve rod |
| CN107387783A (en) * | 2017-09-06 | 2017-11-24 | 苏州良阀阀门有限公司 | A kind of stop valve |
-
2009
- 2009-09-10 CN CN200910152490A patent/CN101655159A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244695A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows globe valve with non-rotary valve rod |
| CN103244691A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | Internal pressure type bellows stop valve with switch display positions |
| CN103244696A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | External-pressure type bellows globe valve with non-rotating valve rod |
| CN103244691B (en) * | 2013-05-17 | 2016-02-17 | 江苏星河阀门有限公司 | The internal pressure type bellows stop valve that belt switch position is aobvious |
| CN107387783A (en) * | 2017-09-06 | 2017-11-24 | 苏州良阀阀门有限公司 | A kind of stop valve |
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Open date: 20100224 |