CN201705985U - Metal hard seal floating ball valve - Google Patents
Metal hard seal floating ball valve Download PDFInfo
- Publication number
- CN201705985U CN201705985U CN201020238510XU CN201020238510U CN201705985U CN 201705985 U CN201705985 U CN 201705985U CN 201020238510X U CN201020238510X U CN 201020238510XU CN 201020238510 U CN201020238510 U CN 201020238510U CN 201705985 U CN201705985 U CN 201705985U
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- valve
- spring
- valve body
- floating ball
- metal hard
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Abstract
The utility model discloses a metal hard seal floating ball valve, which comprises a valve body, a valve rod, a ball body and a valve rod operating mechanism, wherein the ball body is positioned in the valve body; a metal seal valve seat matched with two sides in the valve body are arranged on two sides in the valve body, which are relative to the ball body; spring cavities are arranged in the inner side parts of the metal seal valve seats, which are relative to the valve body and are internally provided with springs; the length of each spring is greater than the depth of each spring cavity; a pressure sleeve micro moving cavity is arranged at an opening of the valve body, which corresponds to the spring cavity; an annular pressure jacket is movably arranged on the pressure sleeve micro moving cavity; one end of the annular pressure sleeve is abutted against the spring and is limited and matched with the outer wall at the opening of the spring cavity; and a valve seat sealing pad is arranged between the other end of the annular pressure sleeve and the valve body. The utility model has the advantages that the metal hard seal floating ball valve has bilateral sealing function and cannot be locked when in use at high temperature; and the maximum compression amount of the springs is set, so that the springs cannot be plastically deformed when in use for a long term.
Description
Technical field
The utility model relates to a kind of ball valve, specifically is meant a kind of metal hard-sealing floating ball valve.
Background technique
Ordinary ball valve adopts nonmetallic material such as teflon as sealing surface of seat usually, owing to be subjected to the restriction of nonmetallic material, ordinary ball valve can only be used for the not high occasion of temperature.Therefore metal hard-sealing ball valve can be used in worst hot case owing to adopt metal seat valve, and metal hard-sealing ball valve has wider application area than ordinary ball valve.
Conventional metal hard-sealing floating ball valve, as shown in Figure 1, 2, 3, its structure mainly by valve body 1 ', valve seat 2 ', valve base sealing pad 3 ', spheroid 4 ', valve rod 5 ', spanner 6 ' etc. component form.Valve rod 5 ' with spheroid 4 ' and spanner 6 ' be fixed together, by spanner 6 ' operation can drive spheroid 4 ' rotation, thereby the open and close of control ball valve.Valve seat 2 ' with valve body 1 ' by valve base sealing pad 3 ' seal.Because metal hard-sealing ball valve is generally used for worst hot case, at high temperature, spheroid, valve seat, valve base sealing pad all can expand, expand and make valve stuck for fear of the high temperature of component, usually a side valve seat be provided with behind butterfly spring 7 ', eliminate the influence that element size changes by the resiliently deformable of spring, valve at high temperature can be stuck.But, owing to be provided with butterfly spring behind at valve seat, conventional metal hard-sealing floating ball valve usually can only one-way sealing, as shown in Figure 1, if negate to sealing, then butterfly spring can be because bear huge medium power and produce permanent deformation for a long time, thereby cause the inefficacy of butterfly spring and damage.
The model utility content
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and has the two way sealed function and valve uses the metal hard-sealing floating ball valve that can not be stuck under hot environment and provide a kind of.
For achieving the above object, the technical solution of the utility model is to include valve body, valve rod, spheroid, the valve rod operating device, described spheroid is positioned at valve body, and the both sides of relative this spheroid are provided with adaptive with it metallic seal valve seat in the described valve body, described metallic seal valve seat is provided with spring chamber in the inside portion with respect to valve body, be provided with spring in this spring chamber, and the length under the nature of this spring is greater than the degree of depth of spring chamber, and the opening of the corresponding spring chamber of described valve body is provided with the little chamber of moving of gland, little the moving of this gland is provided with annular gland movably in the chamber, and a end that should the annular gland and spring butt and with spacing cooperation of opening outer wall of spring chamber, be provided with the valve base sealing pad between the other end of this annular gland and the valve body.
By above-mentioned setting, valve all has certain little space of moving between the both sides valve seat of valve and the annular gland under initial conditions, so valve can not expand because of high temperature extremely.When pressure reduction being arranged when valve closing and at the valve two ends, spheroid makes the downstream side length of spring compressed under the effect of pressure medium, metallic seal valve seat and annular gland until the downstream side fit tightly, that is, very close to each other between the metallic seal valve seat in downstream side and the annular gland.At this moment; spring is owing to the position limitation protection that has been subjected to the opening outer wall of spring chamber can further not compressed; be that spring has only born part medium power; therefore spring can not produce permanent deformation and lose efficacy; and bigger medium power has been directly delivered to annular gland and valve base sealing pad by the metallic seal valve seat, thereby makes metallic seal valve seat and valve body have better sealability.At this moment, owing to have the gap between the metallic seal valve seat of the other end and the gland, therefore, under worst hot case, valve can be not stuck because of the expansion of component.
The advantage of the application's metal hard-sealing floating ball valve is to have the two way sealed function, can not be stuck when at high temperature using, and the maximum compressibility of spring is designed to limit, and therefore spring can not produce plastic deformation when long-term the use.
The half section that further setting is described annular gland is L-shaped, wherein its vertical portion and spring butt and with spacing cooperation of opening outer wall of spring chamber, the seal face of the transverse part of annular gland and valve base sealing pad compression fit and this transverse part is anti-oblique setting.Originally be provided with the sealing that helps improve valve base sealing pad and annular gland.
Further being provided with is that described valve rod operating device is a spanner, described valve body is provided with the valve stem casing of joining and being communicated with body cavity with valve stem casing, described valve rod passes valve stem casing, its the inner is stretched in the valve body and is linked with spheroid, and its outer end is stretched out valve stem casing and is fixedly connected with spanner and cooperates.This setting, described valve rod operating device also can adopt worm gearing or Pneumatic actuator or Electric actuator.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 conventional metals seals the floating ball valve structural representation firmly;
Fig. 2 conventional metals seals floating ball valve I portion enlarged view firmly;
Fig. 3 conventional metals seals floating ball valve II portion enlarged view firmly;
Fig. 4 the utility model embodiment structural representation;
Fig. 5 the utility model embodiment III portion enlarged view;
Fig. 6 the utility model embodiment closed condition partial enlarged drawing.
Embodiment
Embodiment of the present utility model shown in Fig. 4-6, include valve body 1, valve rod 2, spheroid 3, the valve rod operating device, the described valve rod operating device of present embodiment is a spanner 41, described valve body is provided with the valve stem casing 11 of joining and being communicated with body cavity with valve rod 2 covers, described valve rod 2 passes valve stem casing 11, its the inner is stretched in the valve body 1 and with spheroid 3 and is linked, its outer end is stretched out valve stem casing 11 and is fixedly connected with spanner 41 and cooperates, described spheroid 3 is positioned at valve body 1, and the both sides of relative this spheroid 3 are provided with adaptive with it metallic seal valve seat 12 in the described valve body 1, described metallic seal valve seat 12 is provided with spring chamber 121 in the inside portion with respect to valve body 1, be provided with spring 122 in this spring chamber 121, and the length under the nature of this spring 122 is greater than the degree of depth of spring chamber 121, and the opening of described valve body 1 corresponding spring chamber 121 is provided with the little chamber 13 of moving of gland, little the moving of this gland is provided with annular gland 131 movably in the chamber 13, and a end that should annular gland 131 and spring 122 butts and with 1211 spacing cooperations of opening outer wall of spring chamber 121, be provided with valve base sealing pad 14 between the other end of this annular gland 131 and the valve body 1, present embodiment is that the half section of described annular gland 131 is L-shaped, wherein its vertical portion 1311 and spring 122 butts and with 1211 spacing cooperations of opening outer wall of spring chamber 121, the transverse part 1312 of annular gland 131 is anti-oblique setting with the seal face 13121 of valve base sealing pad 14 compression fit and this transverse part 1312, helps to improve the sealing of valve base sealing pad 14 and annular gland 131.
The utility model, valve all have certain little space 15 of moving between the both sides metallic seal valve seat 12 of valve and the annular gland 131 under initial conditions, as shown in Figure 5, so valve can not expand because of high temperature extremely.When pressure reduction being arranged when valve closing and at the valve two ends, spheroid makes 122 compressions of downstream side spring under the effect of pressure medium, metallic seal valve seat 12 until the downstream side fits tightly with annular gland 131, promptly, very close to each other between the metallic seal valve seat 12 in downstream side and the annular gland 131, as shown in Figure 6.At this moment; spring is owing to the position limitation protection that has been subjected to the opening outer wall 1211 of spring chamber 121 can further not compressed; be that spring has only born part medium power; therefore spring 122 can not produce permanent deformation and lose efficacy; and bigger medium power has been directly delivered to annular gland 131 and valve base sealing pad 14 by metallic seal valve seat 12, thereby makes metallic seal valve seat 12 and valve body have better sealability.At this moment, owing to have the gap between the metallic seal valve seat 12 of the other end and the annular gland 131, therefore, under worst hot case, valve can be not stuck because of the expansion of component.Valve rod operating device described in the utility model also can adopt worm gearing or Pneumatic actuator or Electric actuator.
The advantage of the application's metal hard seal floating ball valve is to have the two way seal function, can not be stuck when at high temperature using, and the maximum compressibility of spring is designed to limit, and therefore spring can not produce plastic deformation when long-term the use.
Claims (4)
1. metal hard-sealing floating ball valve, include valve body, valve rod, spheroid, the valve rod operating device, described spheroid is positioned at valve body, and the both sides of relative this spheroid are provided with adaptive with it metallic seal valve seat in the described valve body, it is characterized in that: described metallic seal valve seat is provided with spring chamber in the inside portion with respect to valve body, be provided with spring in this spring chamber, and the length under the nature of this spring is greater than the degree of depth of spring chamber, and the opening of the corresponding spring chamber of described valve body is provided with the little chamber of moving of gland, little the moving of this gland is provided with annular gland movably in the chamber, and a end that should the annular gland and spring butt and with spacing cooperation of opening outer wall of spring chamber, be provided with the valve base sealing pad between the other end of this annular gland and the valve body.
2. a kind of metal hard-sealing floating ball valve according to claim 1, it is characterized in that: the half section of described annular gland is L-shaped, wherein its vertical portion and spring butt and with spacing cooperation of opening outer wall of spring chamber, the seal face of the transverse part of annular gland and valve base sealing pad compression fit and this transverse part is anti-oblique setting.
3. a kind of metal hard-sealing floating ball valve according to claim 1 and 2, it is characterized in that: described valve rod operating device is a spanner, described valve body is provided with the valve stem casing of joining and being communicated with body cavity with valve stem casing, described valve rod passes valve stem casing, its the inner is stretched in the valve body and is linked with spheroid, and its outer end is stretched out valve stem casing and is fixedly connected with spanner and cooperates.
4. a kind of metal hard-sealing floating ball valve according to claim 3 is characterized in that: described valve rod operating device adopts worm gearing or Pneumatic actuator or Electric actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020238510XU CN201705985U (en) | 2010-06-23 | 2010-06-23 | Metal hard seal floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020238510XU CN201705985U (en) | 2010-06-23 | 2010-06-23 | Metal hard seal floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705985U true CN201705985U (en) | 2011-01-12 |
Family
ID=43443141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020238510XU Expired - Lifetime CN201705985U (en) | 2010-06-23 | 2010-06-23 | Metal hard seal floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705985U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392902A (en) * | 2011-07-12 | 2012-03-28 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102606761A (en) * | 2012-03-29 | 2012-07-25 | 浙江超达阀门股份有限公司 | Ball valve base structure with spring protection mechanism |
| CN105114653A (en) * | 2015-09-29 | 2015-12-02 | 无锡海力自控工程有限公司 | Floating type multi-phase cut-off repose angle valve |
-
2010
- 2010-06-23 CN CN201020238510XU patent/CN201705985U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392902A (en) * | 2011-07-12 | 2012-03-28 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102392902B (en) * | 2011-07-12 | 2013-02-27 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102606761A (en) * | 2012-03-29 | 2012-07-25 | 浙江超达阀门股份有限公司 | Ball valve base structure with spring protection mechanism |
| CN105114653A (en) * | 2015-09-29 | 2015-12-02 | 无锡海力自控工程有限公司 | Floating type multi-phase cut-off repose angle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHAODA VALVE GROUP CO., LTD. Free format text: FORMER NAME: ZHEJIANG CHAODA VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangbei Avenue 325100 Zhejiang Oubei town of Yongjia County Patentee after: Chaoda Valve Group Co., Ltd. Address before: Jiangbei Avenue 325100 Zhejiang Oubei town of Yongjia County Patentee before: Zhejiang Chaoda Valve Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |