CN2515493Y - Valve rod 'reverse Y-type' sealing ring - Google Patents
Valve rod 'reverse Y-type' sealing ring Download PDFInfo
- Publication number
- CN2515493Y CN2515493Y CN 01257506 CN01257506U CN2515493Y CN 2515493 Y CN2515493 Y CN 2515493Y CN 01257506 CN01257506 CN 01257506 CN 01257506 U CN01257506 U CN 01257506U CN 2515493 Y CN2515493 Y CN 2515493Y
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- seal ring
- falling
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- ring
- seal
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Abstract
Disclosed is a reversed Y-shaped seal ring of a valve stem, which is formed by pressing an elastic seal ring tightly under a limited inner hole on a valve body and in an annular gap between a seal ring built-in inner hole and the sealed stroke segment of the valve stem by a gland cover, the utility model is characterized in that: the elastic seal ring is made from silica gel or polyurethanes material, the section has a downward branched reversed Y shape high-low lip, the upper end face and the outer periphery sticking to the reversed Y-shaped seal ring are also nested with a steel-made bowl ring having the same inside circle height with the height of the reversed Y-shaped seal ring, which form a whole body by cementation, the steel-made bowl ring belongs to the interference fit relative to the seal ring built-in inner hole in the radial direction, a rock wool gasket is also cushioned between the upper end face of the steel-made bowl ring and the gland cover, the steel-made bowl ring type reversed Y-shaped seal ring can be arranged in layers, and the working pressure can reach 25MPa after three layers of stacking. The utility model has the reasonable material, structure and cooperation, abundant and effective compensation to fatigue and abrasion, and is applicable for manual and unattended electric valves, and the utility model has reliable sealing, simple structure and convenient implementation.
Description
Technical field: the utility model relates to the mechanical seal device field, relates in particular to the improvement of the ring structure between fluid control valve upper valve rod and valve body.
Background technique: present commercially available valve, its Sealing elastic material is materials such as rock wool, rubber, is aided with the metal ring hold down gag, and structure is also varied, but because material, structure and collocation therebetween are very unreasonable, wear extent all can not get enough, effectively compensation.Especially in the auto-controlled electric valve, valve sealing element initial sealing power is transferred too for a short time, and run, drip, leak take place soon; Initial sealing power is transferred too greatly, consume too many valve rod running torque, make Electric Machine Control malfunctioning even burn motor, and radially reach the axial high speed friction along with valve rod, seal arrangement very easily produces fatigue wear, because of not obtaining abundance, effectively compensation,, be easy to produce run, drip, leak so that working life is not long.
Summary of the invention: technical problem to be solved in the utility model is that valve rod " shape of the falling Y " seal ring that a kind of material, structure and cooperation thereof are more reasonable, can carry out abundance, effective compensation to fatigue wear will be provided.
For this reason, the technical solution of the utility model is: a kind of valve rod " shape of falling Y " seal ring, be elastic seal ring to be pressed on below the spacing endoporus on the valve body with sealing gland, seal ring is installed in the annular space between the sealing trip segment of endoporus and valve rod and is constituted, it is characterized in that: described elastic seal ring is silica gel or polyurethane material, " shape of falling Y " height that its sectional tool has downward jag to form, low lip, the upper surface that the height of this " shape of falling Y " seal ring is installed endoporus than seal ring is that spacing endoporus lower surface exceeds the every circle of 0.2mm/, its low lip inner ring and described valve stem seal trip segment closely cooperate, the formation sealing thereby its high lip outer ring and seal ring installation endoporus closely cooperate.
The outer ring surface roughness Ra of described " shape of falling Y " seal ring 〉=25 μ m, and install with seal ring that bore area is gluing to be combined.
Upper-end surface and the periphery of being close to described " shape of falling Y " seal ring also are with steel bowl circle and the glued integral body that forms that its inner ring height equates with " shape of falling Y " seal ring height, it is interference fit that the steel bowl encloses diametrically opposed seal ring installation endoporus, also is lined with the rock wool pad between steel bowl circle upper-end surface and sealing gland.
Aperture, described steel bowl circle upper end equates with described sealing gland aperture, all is valve stem seal trip segment diameter 1.04 times (mm); The aperture of described rock wool pad is than the steel bowl circle upper end big 2.0mm in aperture, and the periphery of rock wool pad footpath equates with spacing diameter of bore, all than the periphery footpath of steel bowl circle greatly more than the 5.0mm, its thickness 〉=2mm; It is above wear-resisting, the resin layer of 0.008mm and surface roughness Ra≤3.2 μ m that the outer surface of steel bowl circle is coated with thickness, and seal ring is installed inner bore surface roughness Ra≤3.2 μ m; Described " shape of falling Y " seal ring can multi-turn be stacked in the seal ring installation endoporus, and seal ring is installed the every circle of closed assembly total height minimizing 0.2mm/ that the endoporus height is a seal ring.
The high lip portion height of described " shape of falling Y " seal ring is 2/5 of a seal ring total height, the aperture, upper end of " shape of falling Y " seal ring is 1.02 times (mm) of valve stem seal trip segment diameter, and the low lip inner ring diameter of " shape of falling Y " seal ring is 0.90 times (mm) of valve stem seal trip segment diameter; Described spacing diameter of bore is installed more than the big 5.0mm of diameter of bore than seal ring, its degree of depth 〉=4mm; Described sealing gland aperture is 1.04 times (mm) of valve stem seal trip segment diameter.
That the surface of the sealing trip segment of described valve rod has is wear-resisting, resin layer and surface roughness Ra≤3.2 μ m.
Owing to adopted above-mentioned architecture advances, the utlity model has following advantage:
The anti-various chemical corrosions of silica gel and polyurethane material, and has a flexible strength preferably, low coefficient of friction and wear resistance, the operating temperature range of broad, but because its elastic force is lower, past almost never is used as the valve seal material, the utility model sticks with glue seal ring periphery silica gel or polyurethane at seal ring (suitable Low pressure valve) on the inner hole wall is installed, or hoop axially reaches upper-end surface intensity with steel bowl circle (being suitable for high pressure valve) to prevent its rotational deformation and to strengthen it outward, and its also tight with it the coincideing of impacting force that can bear from top sealing gland is sealed with on realizing; Simultaneously, for making full use of silica gel and polyurethane flexible resilient power, low friction, high abrasion characteristics preferably, the structure of falling the y-shaped cross-section is adopted in the seal ring lower end, the valve stem seal trip segment that is aided with low surface roughness, make the radially receipts of the low lip inner ring of seal ring expand motion responsive valves fluid pressure variation flexibly, thereby can do tight dynamic seal (packing) to the valve stem seal trip segment, moment consumption and frictional loss that valve rod is rotated reduce greatly, can also carry out significantly dynamic compensation to the wearing and tearing that produce, significantly improve the working life of valve sealing ring; " shape of falling Y " seal ring of steel bowl circle type can adapt to multi-layer stacked, and working pressure is significantly increased: the working pressure of the valve of the utility model individual layer seal ring is 0～1.6MPa, and three stacked dress back working pressures can reach 25MPa, 0～100 ℃ of operating temperature; The utility model not only is applicable to manually-operated gate but also be applicable to unattended electric valve, and sealing is reliable, and is simple in structure, and it is convenient to implement, and economical, societal benefits are remarkable, have the marketing prospect.
Description of drawings: the utility model is made an explanation below in conjunction with accompanying drawing:
Fig. 1 is the utility model embodiment's an individual layer dress valve body mounting structure sectional view.
Fig. 2 is " shape of falling Y " seal ring sectional view of the utility model embodiment.
Fig. 3 is outer hoop type " shape of falling Y " the seal ring sectional view of the utility model embodiment's steel bowl circle.
Fig. 4 is the utility model embodiment's 3 stacked dress type valve body structure sectional views.
Embodiment: as Fig. 1,2, shown in 3: a kind of valve rod " shape of falling Y " seal ring, be elastic seal ring 2 to be pressed on spacing endoporus on the valve body below 3 with sealing gland 1, seal ring is installed in the annular space between the sealing trip segment 5 of endoporus 4 and valve rod and is constituted, it is characterized in that: described elastic seal ring 2 is silica gel or polyurethane material, " shape of falling Y " high lip 2-1 that its sectional tool has downward jag to form, low lip 2-2, the upper surface that the height h of this " shape of falling Y " seal ring 2 installs endoporus 4 than seal ring is that spacing endoporus 3 lower surfaces exceed the every circle of 0.2mm/, its low lip inner ring and described valve stem seal trip segment 5 closely cooperate, the formation sealing thereby its high lip outer ring and seal ring installation endoporus 4 closely cooperate.
The high lip 2-1 part height h of described " shape of falling Y " seal ring 2
1 Be 2/5 of seal ring total height h, aperture, the upper end d of " shape of falling Y " seal ring 2
1Be 1.02 times (mm) of valve stem seal trip segment 5 diameter d, the low lip inner ring diameter d of " shape of falling Y " seal ring 2
2Be 0.90 times (mm) of valve stem seal trip segment 5 diameter d; The diameter D of described spacing endoporus 3
1The diameter D of endoporus 4 is installed than seal ring
2More than the big 5.0mm, the degree of depth 〉=4mm of spacing endoporus 3; Described sealing gland 1 aperture D
3Be 1.04 times (mm) of valve stem seal trip segment 5 diameter d.
That the surface of the sealing trip segment 5 of described valve rod has is wear-resisting, resin layer and surface roughness Ra≤3.2 μ m.
As shown in Figure 2: the outer ring d of described " shape of falling Y " seal ring
5Surface roughness Ra 〉=25 μ m, and install with seal ring that bore area is gluing to be combined.
As shown in Figure 3: be close to that the upper-end surface of described " shape of falling Y " seal ring 2 and periphery also are with steel bowl circle 6 that its inner ring height and " shape of falling Y " seal ring 2 highly equate and glued to form overall height be the integral body of h, the steel bowl encloses 6 diametrically opposed seal rings and endoporus 4 are installed are interference fit, encloses 6 upper-end surfaces and 1 of sealing gland also is lined with rock wool pad 7 at the steel bowl.
Described steel bowl encloses 6 upper end aperture d3 and described sealing gland 1 aperture D
3Equate, all be valve stem seal trip segment 5 diameter d 1.04 times (mm); The aperture d4 of described rock wool pad 7 encloses 6 upper end aperture d than steel bowl
3Big 2.0mm, the periphery footpath and the spacing endoporus 3 diameter D of rock wool pad 7
1Equate, all than the periphery footpath d of steel bowl circle 6
5More than the big 5.0mm, its thickness 〉=2mm; It is above wear-resisting, the resin layer of 0.008mm and surface roughness Ra≤3.2 μ m that the outer surface of steel bowl circle 6 is coated with thickness, and seal ring is installed endoporus 4 surface roughness Ra≤3.2 μ m.
As shown in Figure 4: outer hoop type " shape of the falling Y " seal ring 2 of described steel bowl circle is stacked in seal ring with three circles and installs in the endoporus 4, and seal ring is installed the every circle of closed assembly total height minimizing 0.2mm/ that endoporus 4 highly is a seal ring.
Claims (6)
1, a kind of valve rod " shape of falling Y " seal ring, be elastic seal ring to be pressed on below the spacing endoporus on the valve body with sealing gland, seal ring is installed in the annular space between the sealing trip segment of endoporus and valve rod and is constituted, it is characterized in that: described elastic seal ring is silica gel or polyurethane material, " shape of falling Y " height that its sectional tool has downward jag to form, low lip, the upper surface that the height of this " shape of falling Y " seal ring is installed endoporus than seal ring is that spacing endoporus lower surface exceeds the every circle of 0.2mm/, its low lip inner ring and described valve stem seal trip segment closely cooperate, the formation sealing thereby its high lip outer ring and seal ring installation endoporus closely cooperate.
2, valve rod as claimed in claim 1 " shape of falling Y " seal ring is characterized in that: the outer ring surface roughness Ra of described " shape of falling Y " seal ring 〉=25 μ m, and install with seal ring that bore area is gluing to be combined.
3, valve rod as claimed in claim 1 " shape of falling Y " seal ring, it is characterized in that: upper-end surface and the periphery of being close to described " shape of falling Y " seal ring also are with steel bowl circle and the glued integral body that forms that its inner ring height equates with " shape of falling Y " seal ring height, it is interference fit that the steel bowl encloses diametrically opposed seal ring installation endoporus, also is lined with the rock wool pad between steel bowl circle upper-end surface and sealing gland.
4, valve rod as claimed in claim 3 " shape of falling Y " seal ring is characterized in that: aperture, described steel bowl circle upper end equates with described sealing gland aperture, all is valve stem seal trip segment diameter 1.04 times (mm); The aperture of described rock wool pad is than the steel bowl circle upper end big 2.0mm in aperture, and the periphery of rock wool pad footpath equates with spacing diameter of bore, all than the periphery footpath of steel bowl circle greatly more than the 5.0mm, its thickness 〉=2mm; It is above wear-resisting, the resin layer of 0.008mm and surface roughness Ra≤3.2 μ m that the outer surface of steel bowl circle is coated with thickness, and seal ring is installed inner bore surface roughness Ra≤3.2 μ m; Described " shape of falling Y " seal ring can multi-turn be stacked in the seal ring installation endoporus, and seal ring is installed the every circle of closed assembly total height minimizing 0.2mm/ that the endoporus height is a seal ring.
5, as arbitrary described valve rod " shape of falling Y " seal ring in the claim 1,2,3,4, it is characterized in that: the high lip portion height of described " shape of falling Y " seal ring is 2/5 of a seal ring total height, the aperture, upper end of " shape of falling Y " seal ring is 1.02 times (mm) of valve stem seal trip segment diameter, and the low lip inner ring diameter of " shape of falling Y " seal ring is 0.90 times (mm) of valve stem seal trip segment diameter; Described spacing diameter of bore is installed more than the big 5.0mm of diameter of bore than seal ring, its degree of depth 〉=4mm; Described sealing gland aperture is 1.04 times (mm) of valve stem seal trip segment diameter.
6, valve rod as claimed in claim 5 " shape of falling Y " seal ring is characterized in that: the surface of the sealing trip segment of described valve rod has wear-resisting, resin layer and surface roughness Ra≤3.2 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257506 CN2515493Y (en) | 2001-12-11 | 2001-12-11 | Valve rod 'reverse Y-type' sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257506 CN2515493Y (en) | 2001-12-11 | 2001-12-11 | Valve rod 'reverse Y-type' sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2515493Y true CN2515493Y (en) | 2002-10-09 |
Family
ID=33666246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01257506 Expired - Fee Related CN2515493Y (en) | 2001-12-11 | 2001-12-11 | Valve rod 'reverse Y-type' sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2515493Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494172A (en) * | 2011-11-30 | 2012-06-13 | 深圳市菲恩测控科技有限公司 | High-voltage electrically-operated valve |
| CN105728379A (en) * | 2016-04-12 | 2016-07-06 | 中国铁建重工集团有限公司 | Cleaning device for washing shield tunneling machine cutterhead and sealing device thereof |
| US9797513B2 (en) | 2010-09-09 | 2017-10-24 | Technetics Group Llc | Annular sealing device |
| CN110234572A (en) * | 2017-07-28 | 2019-09-13 | 深圳市大疆创新科技有限公司 | The vision system and unmanned plane of unmanned plane |
| CN112901775A (en) * | 2021-01-13 | 2021-06-04 | 西安近代化学研究所 | Sheet-shaped radial sealing device formed by alternately combining sealing rings from inside to outside up and down |
-
2001
- 2001-12-11 CN CN 01257506 patent/CN2515493Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9797513B2 (en) | 2010-09-09 | 2017-10-24 | Technetics Group Llc | Annular sealing device |
| US10598284B2 (en) | 2010-09-09 | 2020-03-24 | Technetics Group Llc | Annular sealing device |
| CN102494172A (en) * | 2011-11-30 | 2012-06-13 | 深圳市菲恩测控科技有限公司 | High-voltage electrically-operated valve |
| CN105728379A (en) * | 2016-04-12 | 2016-07-06 | 中国铁建重工集团有限公司 | Cleaning device for washing shield tunneling machine cutterhead and sealing device thereof |
| CN110234572A (en) * | 2017-07-28 | 2019-09-13 | 深圳市大疆创新科技有限公司 | The vision system and unmanned plane of unmanned plane |
| CN110234572B (en) * | 2017-07-28 | 2021-08-13 | 深圳市大疆创新科技有限公司 | Unmanned aerial vehicle's visual system and unmanned aerial vehicle |
| CN112901775A (en) * | 2021-01-13 | 2021-06-04 | 西安近代化学研究所 | Sheet-shaped radial sealing device formed by alternately combining sealing rings from inside to outside up and down |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |