CN2573800Y - Negative pressure coal jet ball valve - Google Patents
Negative pressure coal jet ball valve Download PDFInfo
- Publication number
- CN2573800Y CN2573800Y CN 02254852 CN02254852U CN2573800Y CN 2573800 Y CN2573800 Y CN 2573800Y CN 02254852 CN02254852 CN 02254852 CN 02254852 U CN02254852 U CN 02254852U CN 2573800 Y CN2573800 Y CN 2573800Y
- Authority
- CN
- China
- Prior art keywords
- left valve
- valve body
- sealing seat
- ball
- valve barrel
- 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 negative pressure coal jet ball valve which comprises a ball, a left valve body, a right valve body, an upper valve handle, a lower valve handle and an actuator. A sealing seat, a spring and a sealing ring are arranged between the ball and the left valve body; the sealing seat forms an L shape, and an external air chamber is formed between the L-shaped sealing seat and the left valve body. The sealing ring forms a U shape, and an inner air chamber is formed between the U-shaped sealing ring and the ball; a regulating ring is arranged between the left valve body and the right valve body, and the spring is arranged between the regulating ring and the sealing seat. The external air chamber is connected with an air inlet pipe at the left valve body; a control switch is arranged on the air inlet pipe. In order to avoid the abrasion of the powder-gas mixed media to the sealing surface of the ball, the left valve body passage and the L-shaped sealing seat can be made into conical structure, which causes the diameter of the left valve body to be larger than that of the ball. The utility model prevents the powder-gas mixed media from entering the gap between the ball and the sealing ring, and utility model has the advantages of high sealing performance, abrasion resistance and long service life.
Description
One, technical field
The utility model relates to a kind of ball valve, particularly relates to the coal powder injection ball valve of the used combustion system of industries such as a kind of metallurgy, building materials, pottery, petrochemical industry.
Two, background technique
The coal powder injection ball valve of the combustion system that industries such as existing metallurgy, building materials, pottery, petrochemical industry are used in use, the powder gas mixed medium (being coal dust gas mixed medium) in the ball valve passage enters the slit between spheroid and the seal ring easily.Thereby ball valve is caused than galling, shortened the working life of ball valve.
Three, model utility content
The purpose of this utility model is to overcome above-mentioned deficiency, and the wear-resisting coal powder injection ball valve of negative pressure that provides a kind of powder gas mixed medium can not enter the slit between spheroid and the seal ring.
The purpose of this utility model realizes by following technical solution: the wear-resisting coal powder injection ball valve of a kind of negative pressure, comprise spheroid, left valve barrel, right valve barrel, upper valve rod, lower valve rod, actuator, sealing seat, spring, seal ring are housed between spheroid and left valve barrel, described sealing seat is L shaped, make and form outer air chamber between L shaped sealing seat and the left valve barrel, described seal ring is a U-shaped, make and form interior air chamber between U-shaped seal ring and the spheroid, be equipped with between left valve barrel and right valve barrel and adjust circle, described spring is contained in to be adjusted between circle and the sealing seat; Described outer air chamber connects suction tude at the left valve barrel place, control switch is housed on suction tude.
After adopting the utility model structure, because L shaped sealing seat of promotion and U-shaped seal ring are drawn close to spheroid after the outer air chamber air inlet, the pressure of air chamber increases and greater than the pressure of ball valve passage powder gas mixed medium in making, thereby has avoided powder gas mixed medium to enter slit between spheroid and the seal ring.Therefore, the utility model compared with prior art dust stratification, jam phenomenon can not occur, has the advantage of sealability height, wear-resistant, long service life.
Four, description of drawings
Below in conjunction with accompanying drawing and mode of execution the utility model is described in further detail.
Fig. 1 is the structural representation of the wear-resisting coal powder injection ball valve of the utility model negative pressure.
Five, embodiment
With reference to Fig. 1 as can be known, the wear-resisting coal powder injection ball valve of the utility model negative pressure is made of parts such as spheroid 8, left valve barrel 3, right valve barrel 2, upper valve rod 12, lower valve rod 1, actuators 14, sealing seat 5, spring 4, seal ring 6 are housed between spheroid 8 and left valve barrel 3, described sealing seat 5 is L shaped, make and form outer air chamber 9 between L shaped sealing seat 5 and the left valve barrel 3, described seal ring 6 is a U-shaped, make and form interior air chamber 7 between U-shaped seal ring 6 and the spheroid 8, be equipped with between left valve barrel 3 and right valve barrel 2 and adjust circle 10, described spring 4 is contained in to be adjusted between circle 10 and the sealing seat 5; Described outer air chamber 9 connects suction tude 11 at left valve barrel 3 places, control switch 13 is housed on suction tude 11.Wherein actuator 14 can adopt electronic, pneumatic, manual, surge, multiple mode such as electricity surges.For fear of of the abrasion of powder gas mixed medium to the sealing surface of spheroid, left valve barrel 3 passages and L shaped sealing seat 5 can be made cone structure, make left valve barrel import latus rectum greater than the spheroid latus rectum.Like this, when powder gas mixed medium when the left valve barrel passage enters the spheroid passage, latus rectum dwindles, flow velocity increases, thereby produces certain negative pressure, can prevent that powder gas mixed medium from entering the sealing surface of spheroid.
During the work of this ball valve, pressurized air enters outer air chamber by control switch, suction tude, promotes L shaped sealing seat and the U-shaped seal ring is drawn close to spheroid.Outside under the effect of air chamber pressure, the pressure of air chamber increases and greater than the pressure of powder gas mixed medium in the ball valve passage in impelling, and has avoided powder gas mixed medium to enter slit between spheroid and the seal ring.When ball valve rotated, the pressurized air in the outer air chamber of releasing under spring action, promoted L shaped sealing seat and draws close to left valve barrel, and the sealing surface of U-shaped seal ring and spheroid is broken away from, and reached the ball valve opening-closing process and did not have friction, had improved the ball valve sealing performance.When if the U-shaped seal ring is worn, can suitably increase the capacity of outer air chamber compressed air, impel the U-shaped seal ring to engage well, so this ball valve also has the automatic wear compensation function with spheroid.Therefore, the utility model compared with prior art dust stratification, jam phenomenon can not occur, has the advantage of sealing height, wear-resistant, long service life.
Claims (2)
1, the wear-resisting coal powder injection ball valve of a kind of negative pressure, comprise spheroid (8), left valve barrel (3), right valve barrel (2), upper valve rod (12), lower valve rod (1), actuator (14), between spheroid (8) and left valve barrel (3), sealing seat (5) is housed, spring (4), seal ring (6), it is characterized in that: described sealing seat (5) is for L shaped, make and form outer air chamber (9) between L shaped sealing seat (5) and the left valve barrel (3), described seal ring (6) is a U-shaped, make and form interior air chamber (7) between U-shaped seal ring (6) and the spheroid (8), be equipped with between left valve barrel (3) and right valve barrel (2) and adjust circle (10), described spring (4) is contained in to be adjusted between circle (10) and the sealing seat (5); Described outer air chamber (9) locates to connect suction tude (11) at left valve barrel (3), and control switch (13) is housed on suction tude (11).
2, the wear-resisting coal powder injection ball valve of negative pressure as claimed in claim 1 is characterized in that: left valve barrel (3) passage and L shaped sealing seat (5) are made cone structure, make left valve barrel import latus rectum greater than the spheroid latus rectum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02254852 CN2573800Y (en) | 2002-09-20 | 2002-09-20 | Negative pressure coal jet ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02254852 CN2573800Y (en) | 2002-09-20 | 2002-09-20 | Negative pressure coal jet ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2573800Y true CN2573800Y (en) | 2003-09-17 |
Family
ID=33723517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02254852 Expired - Fee Related CN2573800Y (en) | 2002-09-20 | 2002-09-20 | Negative pressure coal jet ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2573800Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269279A (en) * | 2011-07-20 | 2011-12-07 | 伯特利阀门集团有限公司 | Cast stone ball valve with combined seal |
| CN102840359A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Ball valve used for high-temperature easily-coking medium |
| CN105065703A (en) * | 2015-07-17 | 2015-11-18 | 杨涛 | Fixing ball valve for preventing valve seat from being blocked |
-
2002
- 2002-09-20 CN CN 02254852 patent/CN2573800Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269279A (en) * | 2011-07-20 | 2011-12-07 | 伯特利阀门集团有限公司 | Cast stone ball valve with combined seal |
| CN102840359A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Ball valve used for high-temperature easily-coking medium |
| CN105065703A (en) * | 2015-07-17 | 2015-11-18 | 杨涛 | Fixing ball valve for preventing valve seat from being blocked |
| CN105065703B (en) * | 2015-07-17 | 2017-11-07 | 杨涛 | Prevent the fixing ball valve of valve seat jam |
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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 |