CN201944322U - Hard sealed ball valve - Google Patents
Hard sealed ball valve Download PDFInfo
- Publication number
- CN201944322U CN201944322U CN2011200469637U CN201120046963U CN201944322U CN 201944322 U CN201944322 U CN 201944322U CN 2011200469637 U CN2011200469637 U CN 2011200469637U CN 201120046963 U CN201120046963 U CN 201120046963U CN 201944322 U CN201944322 U CN 201944322U
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- Prior art keywords
- valve
- left valve
- spheroid
- barrel
- valve seat
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- Expired - Fee Related
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Abstract
The utility model discloses a hard sealed ball valve which comprises a left valve body and a right valve body. The left valve body is connected with the right valve body. A medium flow channel is arranged on the left valve body and the right valve body. A ball body for opening and closing the medium flow channel is rotatably arranged in the left valve body. A left valve base assembly and a right valve base assembly which abut against the ball body to be sealed are arranged in the medium flow channel. Cemented carbide layers are respectively sprayed on seal spherical surfaces of the ball body formed by the left valve base assembly abutting against the ball body and the right valve base assembly abutting against the ball body, a seal surface of the left valve base assembly and the seal surface of the right valve base assembly. The ball valve has good sealing performance and high sealing reliability, can meet the requirements for the media with solid particles and the dust during transportation, and ensures the reliable open and close of pipelines.
Description
Technical field
The utility model relates to a kind of ball valve, relates in particular to a kind of hard seal ball valve.
Background technique
Along with the development and the progress of science and technology of society, a kind of with spheroid as the ball valve of closure member because have that fluid resistance is little, good airproof performance, switch is rapid and characteristics such as reliability height become new varieties popular in the valve family.The extensive use of ball valve then requires strict more to ball valve.The spheroid of present ball valve and valve seat adopt soft seal, though this sealing is effective, but can only be used on the more common delivery line of ambient condition, and can't be useful in high frictional property dust, slurry, the pipeline conveying aspect that the solid kind foreign matter is sneaked into, the medium of these band solid dusts can cause damage to the sealability of spheroid and valve seat, has limited to the using scope of ball valve.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of hard seal ball valve is provided, and this ball valve sealing performance is good, and the sealing reliability height can satisfy the requirement of medium when carrying to band solid particle and dust, guarantees the pipeline opening and closing reliable.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of hard seal ball valve, comprise interconnective left valve barrel and right valve barrel, described left valve barrel and right valve barrel are provided with the media flow passage, rotate in the described left valve barrel spheroid that switching station is given an account of the matter flow channel is installed, the left valve component and the right valve component that contact sealing with described spheroid are installed, the sealing sphere that contacts with left valve component and right valve component of described spheroid in the described media flow passage, the sealing surface of left side valve component and the sealing surface of right valve component all are coated with hard alloy layer.
As a kind of preferred scheme, described hard alloy layer is a nickel base alloy layer.
As a kind of preferred scheme, described left valve component comprises left valve seat bearing ring, described left valve seat bearing ring is provided with left valve seat, described left valve seat bearing ring is provided with the left load end face portion that makes left valve seat bearing ring slide and draw close to the spheroid sphere, be provided with between described left valve seat bearing ring and the left valve barrel and make described left valve seat and spheroid contact the left elastic component of sealing, the emptying pressure relief device that is communicated with described medium channel is installed on the described left valve barrel.
As a kind of preferred scheme, described right valve component comprises right valve seat bearing ring, described right valve seat bearing ring is provided with right valve seat, described right valve seat bearing ring is provided with and makes right valve seat bearing ring to the right load end face portion that the spheroid sphere slides and draws close, and is provided with between described right valve seat bearing ring and the right valve barrel to make described right valve seat and spheroid contact the right elastic component of sealing.
As a kind of preferred scheme, described spheroid is rotatably installed on the described left valve barrel by upper valve rod and lower valve rod, described upper valve rod is provided with the shaft shoulder, described upper valve rod runs through described left valve barrel and is connected with spheroid, be provided with first seal arrangement between described upper valve rod and the left valve barrel, described first seal arrangement is pressed on the described shaft shoulder and by the gland that detachably is installed in left valve barrel and compresses, and between described gland and the described valve body second seal arrangement is installed.
As a kind of preferred scheme, described first seal arrangement comprises the stuffing box gland that is sleeved on the described upper valve rod, and described stuffing box gland seals by seal ring with left valve barrel and upper valve rod respectively.
As a kind of preferred scheme, described second seal arrangement comprises the filler that is installed between described upper valve rod and the gland, and Gland detachably is installed on the described upper valve rod.
After having adopted technique scheme, effect of the present utility model is: because hard seal ball valve, comprise interconnective left valve barrel and right valve barrel, described left valve barrel and right valve barrel are provided with the media flow passage, rotate in the described left valve barrel spheroid that switching station is given an account of the matter flow channel is installed, the left valve component and the right valve component that contact sealing with described spheroid are installed in the described media flow passage, the sealing sphere that contacts with left valve component and right valve component of described spheroid, the sealing surface of left side valve component and the sealing surface of right valve component all are coated with hard alloy layer, therefore, ball valve in the course of the work, between spheroid and left valve component and spheroid and the right valve component is to contact sealing by hard alloy layer, like this, become hard sealing by before soft seal, the solid dust particle just can not rest on the sealing position between valve seat and the spheroid, hard alloy layer has improved wear-resisting, heatproof, erosion resistance and abrasive ability, also can carry out automatically cleaning to spheroid periphery sphere, the sealing reliability height, can satisfy the requirement of medium when carrying, guarantee the pipeline opening and closing reliable to band solid particle and dust.
Again because described left valve component comprises left valve seat bearing ring, described left valve seat bearing ring is provided with left valve seat, described left valve seat bearing ring is provided with and makes left valve seat bearing ring to the left load end face portion that the spheroid sphere slides and draws close, and is provided with between described left valve seat bearing ring and the left valve barrel to make described left valve seat and spheroid contact the left elastic component of sealing; The emptying pressure relief device that is communicated with described medium channel is installed on the described left valve barrel, therefore, the left load end face portion of left side valve seat bearing ring is subjected to the pressure of medium and the left elastic component elastic force to left valve seat bearing ring, left valve seat bearing ring is moved forward into and left valve seat and spheroid contact sealing to the spheroid sphere, simultaneously, right valve component also with ball seal, the double seal of spheroid both sides, can guarantee when leaking appears in a side, opposite side can also seal, thereby guarantee the operational safety of ball valve, simultaneously, may be subjected to Temperature Influence and the pressure increase by the medium in the medium channel behind the both sides sealing,, guarantee safe in utilization so just by the pressure release of emptying pressure relief device.
Because described spheroid is rotatably installed on the described left valve barrel by upper valve rod and lower valve rod, described upper valve rod is provided with the shaft shoulder, described upper valve rod runs through described left valve barrel and is connected with spheroid, be provided with first seal arrangement between described upper valve rod and the left valve barrel, described first seal arrangement is pressed on the described shaft shoulder and by the gland that detachably is installed in left valve barrel and compresses, between described gland and the described valve body second seal arrangement is installed, therefore, first seal arrangement and second seal arrangement are to the double seal of valve rod periphery, guarantee sealing effect, simultaneously, when first seal arrangement and second seal arrangement appearance leakage,, valve rod and left valve barrel are fixed as one because gland compresses first seal arrangement and then pressing the shaft shoulder, valve rod can't be by the left valve barrel fluid pressure and bullet flies, only need to change second seal arrangement, ball valve can effectively be worked equally, just ball valve is concentrated trimming during pipeline overhaul by the time, thereby guaranteed the normal use of pipeline, reduced maintenance cost simultaneously.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model embodiment's a structure sectional view;
Fig. 2 is the local enlarged diagram of Fig. 1 at the I place;
Fig. 3 is the local enlarged diagram of Fig. 1 at the II place;
In the accompanying drawing: 1. left valve barrel; 2. right valve barrel; 3. upper valve rod; 4. lower valve rod; 5. stuffing box gland; 6. spheroid; 7. gland; 8. filler; 9. Gland; 10. left valve seat bearing ring; 11. left valve seat; 12. left elastic component; 13. right valve seat bearing ring; 131. right load end face portion; 14. right elastic component; 15. right valve seat.
Embodiment
A kind of hard seal ball valve, as Fig. 1, Fig. 2 and shown in Figure 3, comprise interconnective left valve barrel 1 and right valve barrel 2, described left valve barrel 1 and right valve barrel 2 are provided with the media flow passage, rotate in the described left valve barrel 1 spheroid 6 that switching station is given an account of the matter flow channel is installed, the left valve component and the right valve component that contact sealing with described spheroid 6 are installed in the described media flow passage, and the sealing sphere, the sealing surface of left valve component and the sealing surface of right valve component that contact with left valve component and right valve component of described spheroid 6 all are coated with hard alloy layer.Described hard alloy layer is a nickel base alloy layer, and certainly, described hard alloy layer can also be other hard corrosion-resistant materials, such as Tungsten carbite, and cobalt chromium Tungsten carbite.
Described left valve component comprises left valve seat bearing ring 10, described left valve seat bearing ring 10 is provided with left valve seat 11, described left valve seat bearing ring 10 is provided with the left load end face portion that makes left valve seat bearing ring 10 slide and draw close to spheroid 6 spheres, be provided with between described left valve seat bearing ring 10 and the left valve barrel 1 and make described left valve seat 11 and spheroid 6 contact the left elastic component 12 of sealing, described left elastic component 12 is that a pressure is clipped in the pressure spring between described left valve seat bearing ring 10 and the left valve barrel 1; The emptying pressure relief device that is communicated with described medium channel is installed on the described left valve barrel 1, and described emptying pressure relief device comprises an emptying Decompression valves.
Described right valve component comprises right valve seat bearing ring 13, described right valve seat bearing ring 13 is provided with right valve seat 15, described right valve seat bearing ring 13 is provided with the right load end face portion 131 that makes right valve seat bearing ring 13 slide and draw close to spheroid 6 spheres, be provided with between described right valve seat bearing ring 13 and the right valve barrel 2 and make described right valve seat 15 and spheroid 6 contact the right elastic component 14 of sealing, described right elastic component 14 is that a pressure is clipped in the pressure spring between described right valve seat bearing ring 13 and the right valve barrel 2.
Described spheroid 6 is rotatably installed on the described left valve barrel 1 by upper valve rod 3 and lower valve rod 4, described upper valve rod 3 is provided with the shaft shoulder, described upper valve rod 3 runs through described left valve barrel 1 and is connected with spheroid 6, be provided with first seal arrangement between described upper valve rod 3 and the left valve barrel 1, described first seal arrangement is pressed on the described shaft shoulder and by the gland 7 that detachably is installed in left valve barrel 1 and compresses, bolt is connected between described gland 7 and the left valve barrel 1, between described gland 7 and the described valve body second seal arrangement is installed.Described first seal arrangement comprises the stuffing box gland 5 that is sleeved on the described upper valve rod 3, and described stuffing box gland 5 seals by seal ring with left valve barrel 1 and upper valve rod 3 respectively.Described second seal arrangement comprises the filler 8 that is installed between described upper valve rod 3 and the gland 7, on the described upper valve rod 3 Gland 9 is installed detachably.
Working principle of the present utility model is: ball valve in the course of the work, between spheroid 6 and left valve component and spheroid 6 and the right valve component is to contact sealing by hard alloy layer, like this, become hard sealing by before soft seal, the solid dust particle just can not rest on the sealing position between valve seat and the spheroid 6, hard alloy layer has improved wear-resisting, heatproof, erosion resistance and abrasive ability, also can carry out automatically cleaning to spheroid 6 periphery spheres, the sealing reliability height can satisfy the requirement of medium when carrying to band solid particle and dust, guarantees the pipeline opening and closing reliable.The left load end face portion of left side valve seat bearing ring 10 is subjected to the elastic force of pressure and 12 pairs of left valve seat bearing rings 10 of left elastic component of medium, left valve seat bearing ring 10 is moved and then left valve seat 11 contacts sealing with spheroid 6 to spheroid 6 spheres, simultaneously, the right load end face portion 131 of right valve seat bearing ring 13 is subjected to the elastic force of pressure and 14 pairs of right valve seat bearing rings 13 of right elastic component of medium, right valve seat bearing ring 13 is moved and then right valve seat 15 contacts sealing with spheroid 6 to spheroid 6 spheres, the double seal of spheroid 6 both sides, can guarantee when leaking appears in a side, opposite side can also seal, thereby guarantee the operational safety of ball valve, simultaneously, may be subjected to Temperature Influence and the pressure increase by the medium in the medium channel behind the both sides sealing, so just, guarantee safe in utilization by the pressure release of emptying pressure relief device.
Claims (7)
1. hard seal ball valve, comprise interconnective left valve barrel and right valve barrel, described left valve barrel and right valve barrel are provided with the media flow passage, rotate in the described left valve barrel spheroid that switching station is given an account of the matter flow channel is installed, the left valve component and the right valve component that contact sealing with described spheroid are installed in the described media flow passage, it is characterized in that: the sealing sphere, the sealing surface of left valve component and the sealing surface of right valve component that contact with left valve component and right valve component of described spheroid all are coated with hard alloy layer.
2. hard seal ball valve as claimed in claim 1 is characterized in that: described hard alloy layer is a nickel base alloy layer.
3. hard seal ball valve as claimed in claim 1, it is characterized in that: described left valve component comprises left valve seat bearing ring, described left valve seat bearing ring is provided with left valve seat, described left valve seat bearing ring is provided with the left load end face portion that makes left valve seat bearing ring slide and draw close to the spheroid sphere, be provided with between described left valve seat bearing ring and the left valve barrel and make described left valve seat and spheroid contact the left elastic component of sealing, the emptying pressure relief device that is communicated with described medium channel is installed on the described left valve barrel.
4. hard seal ball valve as claimed in claim 3, it is characterized in that: described right valve component comprises right valve seat bearing ring, described right valve seat bearing ring is provided with right valve seat, described right valve seat bearing ring is provided with and makes right valve seat bearing ring to the right load end face portion that the spheroid sphere slides and draws close, and is provided with between described right valve seat bearing ring and the right valve barrel to make described right valve seat and spheroid contact the right elastic component of sealing.
5. hard seal ball valve as claimed in claim 1, it is characterized in that: described spheroid is rotatably installed on the described left valve barrel by upper valve rod and lower valve rod, described upper valve rod is provided with the shaft shoulder, described upper valve rod runs through described left valve barrel and is connected with spheroid, be provided with first seal arrangement between described upper valve rod and the left valve barrel, described first seal arrangement is pressed on the described shaft shoulder and by the gland that detachably is installed in left valve barrel and compresses, and between described gland and the described valve body second seal arrangement is installed.
6. hard seal ball valve as claimed in claim 5 is characterized in that: described first seal arrangement comprises the stuffing box gland that is sleeved on the described upper valve rod, and described stuffing box gland seals by seal ring with left valve barrel and upper valve rod respectively.
7. hard seal ball valve as claimed in claim 5 is characterized in that: described second seal arrangement comprises the filler that is installed between described upper valve rod and the gland, and Gland detachably is installed on the described upper valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200469637U CN201944322U (en) | 2011-02-22 | 2011-02-22 | Hard sealed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200469637U CN201944322U (en) | 2011-02-22 | 2011-02-22 | Hard sealed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944322U true CN201944322U (en) | 2011-08-24 |
Family
ID=44471666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200469637U Expired - Fee Related CN201944322U (en) | 2011-02-22 | 2011-02-22 | Hard sealed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201944322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221781A (en) * | 2014-06-03 | 2016-01-06 | 中核苏阀科技实业股份有限公司 | The not through ball valve of lumen |
| CN110410522A (en) * | 2019-08-27 | 2019-11-05 | 江苏江恒阀业有限公司 | A kind of high pressure valve seat of fixed ball valve |
-
2011
- 2011-02-22 CN CN2011200469637U patent/CN201944322U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221781A (en) * | 2014-06-03 | 2016-01-06 | 中核苏阀科技实业股份有限公司 | The not through ball valve of lumen |
| CN105221781B (en) * | 2014-06-03 | 2017-11-28 | 中核苏阀科技实业股份有限公司 | The not through ball valve of lumen |
| CN110410522A (en) * | 2019-08-27 | 2019-11-05 | 江苏江恒阀业有限公司 | A kind of high pressure valve seat of fixed ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20140222 |