CN201028034Y - Air-sealing ball valve - Google Patents
Air-sealing ball valve Download PDFInfo
- Publication number
- CN201028034Y CN201028034Y CNU2007200359791U CN200720035979U CN201028034Y CN 201028034 Y CN201028034 Y CN 201028034Y CN U2007200359791 U CNU2007200359791 U CN U2007200359791U CN 200720035979 U CN200720035979 U CN 200720035979U CN 201028034 Y CN201028034 Y CN 201028034Y
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- CN
- China
- Prior art keywords
- groove
- valve seat
- valve body
- valve
- upper flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a valve in the general mechanical field, in particular to a gas sealing ball valve sealed with pneumatic principle. The utility model adopts the following technical proposals: a gas sealing ball valve is provided; an opening groove is arranged around the center position of a valve seat for one circle; the diameter of the opening of the groove is smaller than the internal horizontal width of the groove; a valve seat body is arranged around the groove of the valve seat for one circle; the cross section shape of the valve seat body which is arranged inside the groove matches with the cross section shape of the groove; a long groove is arranged around one circle of one side of the valve seat body, which is contacted with the bottom of the groove; the valve seat body is provided with a via hole which is communicated with the long groove, and the via hole is communicated with an air inlet hole which is arranged on an upper flange. The utility model overcomes defects of the prior art by adopting the above proposal, and provides a gas sealing ball valve of reasonable structure, reliable sealing effect and long service life.
Description
Technical field
The utility model relates to the valve in the universal machine field, refers more particularly to the sealing gland formula ball valve with the sealing of air pressure principle.
Background technique
Along with the development of society, especially for above the devices such as coal injection system, air-transport system to washing away at a high speed, very high to the material requirements of the sealing surface of valve.And present stage domestic product, all can't meet the demands as gate valve, dish valve.Existing in addition ball valve also exists some following problems: 1, the sealing between valve seat and the spool is by the sealing that directly cooperatively interacts between self, but because the spool of valve and valve seat are often to want movable mutually, so grown service time, between the two will be impaired owing to friction, sealing can be lost efficacy; 2, valve seat is subjected to washing away at a high speed, some also can take place self change, and so also can influence sealing effect between the two; 3, the ball valve of existing structure will guarantee the sealing between valve seat and the spool, to the processing request height very of valve seat and spool, so can influence working efficiency.
Summary of the invention
The utility model has overcome the deficiencies in the prior art, provides a kind of rational in infrastructure, and sealing effect is reliable, a kind of novel sealing gland formula ball valve of long service life.
Realize above-mentioned purpose, the utility model adopts following technological scheme: a kind of sealing gland formula ball valve, include valve body, valve rod, valve seat and spool, spool is hinged on the valve body by valve rod, described valve body is fixed by upper flange and lower flange, described valve seat is arranged in the upper flange, it is characterized in that: the center position of described valve seat offers the opening groove around it, the opening bore of this groove is less than the inner transverse width of this groove, be provided with valve body on the groove of described valve seat around it, the shape of cross section that places part in the groove of this valve body and the shape of cross section of groove are suitable, the side that contacts with the groove bottom surface that is positioned at of described valve body is provided with elongated slot around it, offer a through hole that connects with elongated slot on the described valve body, the inlet hole of offering on this through hole and upper flange perforation.
Further setting of the present utility model is: be provided with the valve seat trim ring between described upper flange and the valve body, the upper end of close spool one side of this valve seat trim ring is as the supporting base of valve seat, becoming to be sealed and matched by seal ring between the upper end of opposite side and the upper flange, conflicts on valve body in the lower end.
Of the present utility model further the setting again is: the groove cross section of described valve seat is " C " shape, described valve body place part in the groove with groove inwall contact segment for being sealed and matched.
Beneficial effect: offer the opening groove around it by the center position that adopts described valve seat, the opening bore of this groove is less than the inner transverse width of this groove, be provided with valve body on the groove of described spool around it, the shape of cross section that places part in the groove of this valve body and the shape of cross section of groove are suitable, the side that contacts with the groove bottom surface that is positioned at of described valve body is provided with elongated slot around it, offer a through hole that connects with elongated slot on the described valve body, the inlet hole of offering on this through hole and the upper flange connects this scheme, can be by inlet hole conveying gas to upper flange, make gas enter the elongated slot of valve body, at this time the pressure along with gas becomes big, the valve seat of being made by nitrile rubber or silicone rubber expands, thereby cause the tight more and sealing between valve seat and the spool, and air pressure is big more, and sealing effect is good more.Again owing to be provided with the valve seat trim ring between described upper flange and the valve body, the upper end of close spool one side of this valve seat trim ring is as the supporting base of valve seat, become to be sealed and matched by seal ring between the upper end of opposite side and the upper flange, conflict on valve body in the lower end, it is very convenient that valve seat is installed like this, only need open upper flange and get final product.At last, the groove cross section of described valve seat is " C " shape, described valve body place part in the groove with groove inwall contact segment for being sealed and matched.When carrying out conveying gas, can guarantee that not only valve seat to the sealing between the spool, also can guarantee being sealed and matched between valve seat and the valve body, thereby guarantee the stability of the sealing effect of this structure like this.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the A portion enlarged view of Fig. 1.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, a kind of sealing gland formula ball valve, include valve body 1, valve rod 2, valve seat 3 and spool 4, spool 4 is hinged on the valve body 1 by valve rod 2, described valve body 1 is fixing by upper flange 5 and lower flange 6, described valve seat 3 is arranged in the upper flange 5, and cooperate with spool 4, particularly when valve closing, valve seat 3 must be sealed and matched with spool 4, in the utility model embodiment, the center position of described valve seat 3 offers opening groove 31 around it, and the opening of this opening groove 31 can be a bit of, also can be to open a circle along groove 31, but in the utility model, the opening bore of groove 31 must be less than the inner transverse width of this groove 31, and opening bore that refers to here and horizontal width are meant the opening bore and the horizontal width of the groove 31 of valve seat cross section.Be provided with valve body 7 around it on the groove 31 of described valve seat 3, the shape of cross section that places part in the groove 31 of this valve body 7 and the shape of cross section of groove 31 are suitable, the side that contacts with groove 31 bottom surfaces that is positioned at of described valve body 7 is provided with elongated slot 71 around it, offer a through hole 72 that connects with elongated slot 71 on the described valve body 7, the inlet hole of offering on this through hole 72 and the upper flange 5 51 connects, like this can be by inlet hole 51 conveying gas to upper flange 5, make gas enter the elongated slot 71 of valve body 7, at this time the pressure along with gas becomes big, the valve seat of being made by nitrile rubber or silicone rubber 3 expands, thereby make the tight more and sealing between valve seat 3 and the spool 4, and air pressure is big more, sealing effect is good more, in the utility model embodiment, we also can offer on the madial wall of valve seat 4 one with valve body 7 on the groove that connects of through hole 72 make it to expand so that gas enters, improve sealing effect.
In the utility model embodiment, be provided with valve seat trim ring 8 between described upper flange 5 and the valve body 1, the upper end of close spool 4 one sides of this valve seat trim ring 8 is as the supporting base 81 of valve seat 3, be sealed and matched for 9 one-tenth by seal ring between the upper end of opposite side and the upper flange 5, conflict on valve body 1 in the lower end, adopt above-mentioned scheme, can be very convenient when valve seat 3 is installed, only need open upper flange 5 and get final product.
In the utility model embodiment, groove 31 cross sections of described valve seat 3 are " C " shape, can certainly be that triangle or other satisfy the groove 31 of opening bore less than some other shape of inner transverse width, described valve body 7 places part and groove 31 inwall contact segments in the groove 31 for being sealed and matched.When carrying out conveying gas, not only can guarantee the sealing between 3 pairs of spools 4 of valve seat like this, also can guarantee being sealed and matched between valve seat 3 and the valve body 7, thereby guarantee the stability of the sealing effect of this structure.
Certainly, the utility model is except the above-mentioned embodiment who chats, and is any in any improvement or the accommodation made based on total invention thought of the present invention, all within the utility model protection domain.
Claims (3)
1. sealing gland formula ball valve, include valve body, valve rod, valve seat and spool, spool is hinged on the valve body by valve rod, described valve body is fixed by upper flange and lower flange, described valve seat is arranged in the upper flange, it is characterized in that: the center position of described valve seat offers the opening groove around it, the opening bore of this groove is less than the inner transverse width of this groove, be provided with valve body on the groove of described valve seat around it, the shape of cross section that places part in the groove of this valve body and the shape of cross section of groove are suitable, the side that contacts with the groove bottom surface that is positioned at of described valve body is provided with elongated slot around it, offer a through hole that connects with elongated slot on the described valve body, the inlet hole of offering on this through hole and upper flange perforation.
2. sealing gland formula ball valve according to claim 1, it is characterized in that: be provided with the valve seat trim ring between described upper flange and the valve body, the upper end of close spool one side of this valve seat trim ring is as the supporting base of valve seat, becoming to be sealed and matched by seal ring between the upper end of opposite side and the upper flange, conflicts on valve body in the lower end.
3. sealing gland formula ball valve according to claim 1 and 2 is characterized in that: the groove cross section of described valve seat is " C " shape, and described valve body places part and groove inwall contact segment in the groove for being sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200359791U CN201028034Y (en) | 2007-04-12 | 2007-04-12 | Air-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200359791U CN201028034Y (en) | 2007-04-12 | 2007-04-12 | Air-sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028034Y true CN201028034Y (en) | 2008-02-27 |
Family
ID=39132246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200359791U Expired - Fee Related CN201028034Y (en) | 2007-04-12 | 2007-04-12 | Air-sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028034Y (en) |
-
2007
- 2007-04-12 CN CNU2007200359791U patent/CN201028034Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGGONG VALVE CO., LTD. Free format text: FORMER OWNER: YANG LIANCHENG Effective date: 20120516 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325025 WENZHOU, ZHEJIANG PROVINCE TO: 325000 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120516 Address after: No. 3289 Longwan Yongqiang road in Wenzhou city in Zhejiang province 325000 Patentee after: Jinggong Valve Co., Ltd. Address before: No. 3289 Longwan road Wenzhou District Yongqiang 325025 cities in Zhejiang Province Patentee before: Yang Liancheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20150412 |
|
| EXPY | Termination of patent right or utility model |