CN102032357A - Non-leakage fully-lined ball valve - Google Patents
Non-leakage fully-lined ball valve Download PDFInfo
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- CN102032357A CN102032357A CN2010105871354A CN201010587135A CN102032357A CN 102032357 A CN102032357 A CN 102032357A CN 2010105871354 A CN2010105871354 A CN 2010105871354A CN 201010587135 A CN201010587135 A CN 201010587135A CN 102032357 A CN102032357 A CN 102032357A
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- seal ring
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Abstract
The invention discloses a non-leakage fully-lined ball valve and aims to overcome the defects existing in the prior art. The ball valve comprises a valve body, a valve cover, a valve rod, a ball body and a stuffing box, wherein a plurality of grooves are formed at contact positions between the valve body, the valve cover and the valve rod and a medium and are filled with a corrosion-resistant material; an outer sealing ring which is tightly jointed with the ball body is arranged between the valve body and the valve cover; the surface of the outer circle of the outer sealing ring is inwardly provided with a V-shaped groove with an included angle of between 45 and 50 degrees; the gradient of the V-shaped groove is a little smaller than that of a sealing surface; the width of a notch is smaller than a half of the thickness of the outer sealing ring; the groove depth is smaller than two fifths of the diameter of the cross section of the outer sealing ring; an inner sealing ring which is made from polytetrafluoroethylene-filled glass fiber is arranged in the V-shaped groove; upper and lower spherical surfaces of the ball body are provided with through holes of which the two ends are chamfered; and the corrosion-resistant material permeates into the through holes and is combined with a metal substrate of the ball body. The ball valve has the advantages that: the sealing ring inside the ball valve is insusceptible to bonding or rubbing the ball body; high elastic sealing without leakage can be realized; and the ball valve has a simple structure and is safe and reliable.
Description
Technical field
The present invention relates to a kind of ball valve, particularly a kind ofly be used for the full lining ball valve that the chemical industry for making chlorine and alkali industry is carried strong corrosive medium such as chlor-alkali.
Background technique
At present, known ball valve generally is made up of critical pieces such as valve body, valve gap, valve rod, spheroid and stuffing boxes, when being used for chemical industry for making chlorine and alkali and carrying strong corrosive medium such as chlor-alkali, generally can offer groove with the fed sheet of a media contact segment in the valve, be filled with resistant material in the groove, in case ball valve is corroded and leaks.For strengthening Security, the special-purpose full lining ball valve of chlor-alkali is provided with seal ring toward the contact meeting between valve body and valve gap, to strengthen sealed nature, prevent dielectric leakage.But, during actual the use, adhesive wear between seal ring and the spheroid easily takes place and the problem that causes leaking.
At some defectives that existing ball valve uses, many entity and individual have proposed some new improvement projects.Be born on September 8th, 2003 as big vast unit and applied for " Ripple ball valve " utility model patent (number of patent application is 03209327.6) by name, it discloses a kind of Ripple ball valve, comprise the seal arrangement between valve body, spheroid, valve body and the spheroid, described seal arrangement is elastic corrugated sealing component, described elastic corrugated sealing component comprises seal ring, bracing ring, crimp ring, their Placement is: described seal ring one end margin loop wire is pressed against the land portions of described spheroid, forms potted line; The inner chamber of valve body is provided with bracing ring, and described bracing ring has annular groove near on spheroid one side, and the other end of seal ring is installed in the annular groove of bracing ring; Bracing ring is away from being provided with crimp ring between side of spheroid and the valve interior wall, and crimp ring one end is fixedlyed connected with bracing ring, and the crimp ring the other end is fixedlyed connected with valve interior wall.The advantage of this Ripple ball valve be have high temperature resistant, low temperature resistant, wear-resistant, damage resistant, corrosion-resistant, good airproof performance, the advantage of not leaking are applicable to high temperature, cryogen, have the blocking and dredging of fluid, corrosive fluid of solid particle, but the structure relative complex.In addition, Lu Ping has then proposed the application for a patent for invention (number of patent application is 200810244449.7) of " a kind of ball valve " by name on December 7th, 2008, it discloses a kind of ball valve, comprise valve body, valve gap, spheroid, seal ring, spheroid is installed in the valve body, connects by fastening piece between valve body and the valve gap, two seal ring symmetries are installed in valve body and the valve gap, also have a supporting sleeve, be installed in the groove of spheroid, sealing ring material is a polyether-ether-ketone.The advantage of this technological scheme is that resistance to high temperature is good, can in 350 ℃ medium, use for a long time, but and the conveying of strong corrosive medium such as incompatibility chlor-alkali.
Summary of the invention
For the deficiency that easily adhesive wear takes place so that leak between the seal ring that overcomes the common existence of existing full lining ball valve and spheroid, the invention provides a kind of ball valve, be difficult for adhesive wear between seal ring in this valve and the spheroid and can realize that better elastic seals unlikely leakage.
The technical solution adopted for the present invention to solve the technical problems is: a kind of leakage-free fully-lined ball valve, comprise valve body, valve gap, valve rod, spheroid and stuffing box, valve body, valve gap, valve rod and medium contacting point are provided with several grooves, be filled with resistant material in the groove, be provided with the exterior seal ring that fits tightly with spheroid between valve body and the valve gap, it is 45 °～50 ° V-shaped groove that described exterior seal ring outer round surface inwardly has angle.
Further improve as the present invention, described V-shaped groove is built-in with the inner seal ring of being made by the teflon filled glass fiber; The gradient of described V-shaped groove is slightly less than sealing surface, and width of rebate is less than seal ring thickness 1/2, and groove depth is less than 2/5 of the seal ring diameter of section.
Further improve as the present invention, the upper and lower sphere of described spheroid is equipped with the through hole of two chamfers respectively, and resistant material infiltrates in the through hole and is integrated with the spheroid metallic matrix; Described groove is the dovetail groove of bottom land width greater than width of rebate; Described dovetail groove bottom land width≤3mm, width of rebate≤2mm, groove depth≤2mm; Described resistant material is an exhaustive fluorinated ethylene propylene.
Adopt technique scheme, make the present invention have following advantage:
1, good seal.The present invention is provided with the exterior seal ring that fits tightly with spheroid between valve body and valve gap, can effectively prevent dielectric leakage.Simultaneously inwardly to open an angle again be 45 °～50 ° V-shaped groove on the seal ring with outer surface outside, be built-in with the inner seal ring of making by the teflon filled glass fiber at V-shaped groove, the inner seal ring of this material had both had stronger elasticity, can further increase sealing reliability again, also can make the suitable elasticity of maintenance between exterior seal ring and the spheroid simultaneously, reduce the wearing and tearing of adhering between exterior seal ring and the valve body.By its elastic strain, can not only keep excellent sealing performance, and the ball valve switch is also comparatively flexible.
2, safe and reliable.The gradient design of the V-shaped groove that exterior seal ring outer round surface of the present invention is offered is slightly less than the external sealed face, width of rebate is less than exterior seal ring thickness 1/2, groove depth is less than 2/5 of the exterior seal ring diameter of section, can make exterior seal ring behind pressurized, keep elasticity on the one hand, the unlikely on the other hand bulk strength that influences exterior seal ring.On spheroid, lower peripheral surface is equipped with the through hole at 45 °～50 ° of angles of two ends respectively, resistant material infiltrates in the through hole and is integrated with the spheroid metallic matrix, at valve body, valve gap valve rod and medium contacting point are provided with several trough bottom width degree≤3mm, width of rebate≤2mm, the dovetail groove of groove depth≤2mm, again resistant material is filled in these holes and groove in, neither influence valve rod, valve body, the bulk strength of spheroid, can make the complete and metallic matrix formation one of resistant material again, not loosening when guaranteeing its work, aliquation, bulge, that can play is corrosion-resistant, the effect of antiscour, overall tightness is better, and is safer reliable.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 is a specific embodiment of the invention structural representation;
Fig. 2 is an A part partial enlarged drawing among Fig. 1.
Wherein: 1. valve body, 2. valve gap, 3. spheroid, 4. valve rod, 5. exterior seal ring, 6, inner seal ring, 7. stuffing box, 8. dovetail groove, 9.V shape groove, 10. through hole.
Embodiment
A kind of leakage-free fully-lined ball valve as shown in Figure 1, comprise valve body (1), valve gap (2), valve rod (4), spheroid (3) and stuffing box (7), valve body (1), valve gap (2), valve rod (4) is provided with 1-4 bottom land width≤3mm with the medium contacting point, width of rebate≤2mm, the dovetail groove of groove depth≤2mm (8), be filled with exhaustive fluorinated ethylene propylene in the groove, be provided with the exterior seal ring (5) that fits tightly with spheroid between valve body (1) and the valve gap (2), it is 45 °～50 ° V-shaped groove (9) that its outer round surface inwardly is provided with angle, the gradient of V-shaped groove is slightly less than the external sealed face, width of rebate is less than exterior seal ring thickness 1/2, groove depth is less than 2/5 of the exterior seal ring diameter of section, and V-shaped groove is built-in with the inner seal ring of being made by the teflon filled glass fiber (6).The upper and lower sphere of spheroid (3) is equipped with two ends respectively and falls the through hole (10) of 45, and resistant material infiltrates in the through hole and is integrated with the spheroid metallic matrix, and spheroid (3) is forged for the whole casting of carbon steel material with valve rod (4) and formed.
Claims (8)
1. leakage-free fully-lined ball valve, comprise valve body, valve gap, valve rod, spheroid and stuffing box, valve body, valve gap, valve rod and medium contacting point are provided with several grooves, be filled with resistant material in the groove, it is characterized in that being provided with between described valve body and the valve gap exterior seal ring that fits tightly with spheroid, it is 45 °～50 ° V-shaped groove that described exterior seal ring outer round surface inwardly has angle.
2. leakage-free fully-lined ball valve according to claim 1 is characterized in that described V-shaped groove is built-in with the inner seal ring of being made by the teflon filled glass fiber.
3. leakage-free fully-lined ball valve according to claim 2 is characterized in that the gradient of described V-shaped groove is slightly less than sealing surface, and width of rebate is less than exterior seal ring thickness 1/2, and groove depth is less than 2/5 of the exterior seal ring diameter of section.
4. according to the described leakage-free fully-lined ball valve of claim 1-3, it is characterized in that the upper and lower sphere of described spheroid is equipped with the through hole of two chamfers respectively, resistant material infiltrates in the through hole and is integrated with the spheroid metallic matrix.
5. according to the described leakage-free fully-lined ball valve of claim 1-3, it is characterized in that described groove is the dovetail groove of bottom land width greater than width of rebate.
6. according to the described leakage-free fully-lined ball valve of claim 1-3, it is characterized in that described dovetail groove bottom land width≤3mm, width of rebate≤2mm, groove depth≤2mm.
7. according to the described leakage-free fully-lined ball valve of claim 1-3, it is characterized in that described resistant material is an exhaustive fluorinated ethylene propylene.
8. according to the described leakage-free fully-lined ball valve of claim 1-3, it is characterized in that described spheroid and valve rod are that the whole casting forging of carbon steel material forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105871354A CN102032357A (en) | 2010-12-14 | 2010-12-14 | Non-leakage fully-lined ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105871354A CN102032357A (en) | 2010-12-14 | 2010-12-14 | Non-leakage fully-lined ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN102032357A true CN102032357A (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105871354A Pending CN102032357A (en) | 2010-12-14 | 2010-12-14 | Non-leakage fully-lined ball valve |
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| Country | Link |
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| CN (1) | CN102032357A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257857A (en) * | 2015-11-06 | 2016-01-20 | 浙江有氟密阀门有限公司 | Steel-lining fluoroplastic ceramic valve |
| CN108386569A (en) * | 2018-05-21 | 2018-08-10 | 江苏金晟元特种阀门股份有限公司 | Fluoroplastic all-liner cutting ball valve |
| CN114439965A (en) * | 2021-12-28 | 2022-05-06 | 东风富士汤姆森调温器有限公司 | Ball valve sealing structure for thermal management module |
-
2010
- 2010-12-14 CN CN2010105871354A patent/CN102032357A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257857A (en) * | 2015-11-06 | 2016-01-20 | 浙江有氟密阀门有限公司 | Steel-lining fluoroplastic ceramic valve |
| CN108386569A (en) * | 2018-05-21 | 2018-08-10 | 江苏金晟元特种阀门股份有限公司 | Fluoroplastic all-liner cutting ball valve |
| CN114439965A (en) * | 2021-12-28 | 2022-05-06 | 东风富士汤姆森调温器有限公司 | Ball valve sealing structure for thermal management module |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110427 |