CN200986031Y - Pressure relief type butterfly valve - Google Patents
Pressure relief type butterfly valve Download PDFInfo
- Publication number
- CN200986031Y CN200986031Y CN 200620053197 CN200620053197U CN200986031Y CN 200986031 Y CN200986031 Y CN 200986031Y CN 200620053197 CN200620053197 CN 200620053197 CN 200620053197 U CN200620053197 U CN 200620053197U CN 200986031 Y CN200986031 Y CN 200986031Y
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- valve
- rod
- big
- valve plate
- driving mechanism
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- Expired - Fee Related
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Abstract
The utility model discloses a relief butterfly bamper, comprising a valve body and the big valve plate on the valve body, a big valve rod and a transmission drive system. The aerial drainage hole (21) is arranged on the big valve plate (25), and a small valve rod (24) is sleeved with the big valve rod. The small valve plate (20) facing the aerial drainage hole (21) is arranged on the small valve rod (24). The small valve rod (24) is connected with the transmission drive system. The main valve rod is connected with the small valve rod via the lagging transmission system. The utility model is a relief butterfly bamper in the way the decompression is done interiorly, and the difficulty in pipelines installation and the cost is reduced, and the fault points and the medium leakage points in the pipeline system are cut down. The operation is easy and the time spent in opening the valve gate is reduced.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly relates to a kind of pressure release type butterfly valve.
Technical background
The structure of existing eccentric-butterfly-valve is to be provided with a big valve plate in valve body, big valve plate is fixed on the big valve rod, big valve rod and driving mechanism are in transmission connection, drive big valve plate by the big valve rod of drive mechanism and rotate opening and closing, owing to have only a valve plate, and the moment that valve plate one side bigger than normal forms helps closing valve, and is unfavorable for out valve; Therefore, when valve aperture was big, pressure reduction is higher before and after the valve, the unlatching moment of valve was very big, the phenomenon of not opening often occurred, and was easy to damage valve when opening by force.In order to reduce the pressure reduction at valve two ends, reduce to open moment, traditional solution is to connect a small-bore bypass tube on the pipeline at valve two ends again, and a valve is set on bypass tube again; Before main valve is opened, open the minor valve on the bypass tube earlier, allow before the valve medium earial drainage part behind valve, the pressure difference before and after the valve is reduced, even during balance, open main valve again, at this moment, the opening force moment ratio is less, and valve can be opened smoothly; But this method has increased the difficulty and the cost of piping erection, has increased the fault point and the dielectric leakage point of pipe-line system, operates cumbersomely, and valve opening time increases.
The model utility content
Technical problem to be solved in the utility model provides short pressure release type butterfly valve of a kind of easy for installation, simple to operate, opening time.
In order to address the above problem, the pressure release type butterfly valve that the utility model adopts, comprise valve body and be installed in the big valve plate on the valve body, big valve rod and driving mechanism, on described big valve plate, be provided with discharge orifice, described big valve rod coaxial package has a small valve-rod, be provided with the little valve plate corresponding with described discharge orifice on described small valve-rod, described small valve-rod and described driving mechanism are in transmission connection, and described big valve rod is in transmission connection by hysteresis driving mechanism and described small valve-rod.
The end face that described hysteresis driving mechanism is described big valve rod is provided with the annular rack engagement of annular rack and flute profile clutch end face, described flute profile clutch moves axially and is sleeved on the described small valve-rod, the cylindrical of described flute profile clutch is provided with the location skewed slot, cooperates and controls moving axially of described flute profile clutch with locating stud in being fixed in described valve body; Spiral compression spring guarantees that the annular rack of described flute profile clutch and the annular rack on the described big valve rod accurately mesh.
Described hysteresis driving mechanism is to be provided with gear-box between described valve body and described driving mechanism, described small valve-rod passes described gear-box and described driving mechanism is in transmission connection, described small valve-rod is provided with first tooth sector, in the described gear-box of the insertion of described big valve rod and be provided with four fan-shaped gear, described gear-box is provided with gear shaft, and described gear shaft is provided with respectively and is connected with the 3rd tooth sector with second tooth sector of described first tooth sector with four fan-shaped gear transmission engagement.
The area of described discharge orifice is 5% of the described big valve plate gross area.Described discharge orifice and described little valve plate adopt the conical surface to coincide.Described discharge orifice is located at described big valve plate one side bigger than normal.
Adopt the pressure release type butterfly valve of technique scheme, bigger at valve aperture, pressure difference is than higher before and after the valve, and when unlatching moment was very big, driving mechanism was opened little valve plate earlier, earial drainage part medium, treat before and after the valve pressure difference hour, friction torque is corresponding to be reduced, and opens lighter, driving mechanism is opened big valve plate again by the hysteresis driving mechanism, so just Open valve successfully.When closing valve, driving mechanism drives big valve plate and little valve plate counterclockwise rotates simultaneously, begins to close valve; When closing angle reaches 90 when spending, big valve plate is closed, and is rotated further driving mechanism, closes gradually until little valve plate; At this moment, valve plate bottom area (big valve plate+little valve plate) is about 10% greater than the top area, and pressure medium helps valve closing tight.
In sum, the utility model is a kind of pressure release type butterfly valve that adopts inner pressure release mode, has reduced the difficulty and the cost of piping erection, has also reduced the fault point and the dielectric leakage point of pipe-line system, operates more conveniently, and valve opening time reduces.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 cuts open figure along A-A line among Fig. 1;
Fig. 3 is another structural representation of the utility model;
Fig. 4 is along B-B line sectional view among Fig. 3.
Embodiment
Referring to Fig. 1 and Fig. 2, one end of big valve rod 2 in a left side and right big valve rod 7 inserts valve respectively and stops in the axis hole of left side supporting 1 on 26 and right supporting 8, the other end inserts respectively in the left hangers 3 and right hangers 5 of big valve plate 25, is linked to be integral body with big valve plate 25 respectively by left bearing pin 4 and right bearing pin 6; The right side of right big valve rod 7 is provided with double wedge 27, can mesh with the recessed tooth 28 of flute profile clutch 13 left ends; Flute profile clutch 13 is enclosed within on the small valve-rod 24, and links to each other with small valve-rod 24 by flat key 11, can move axially and right big valve rod 7 engagements; The cylindrical of flute profile clutch 13 is provided with location skewed slot 10, cooperates the motion of controlling flute profile clutch 13 with locating stud 9 in being fixed in valve body 26; Right-hand member at flute profile clutch 13 is equipped with spiral compression spring 12, guarantees also transferring power of the recessed tooth 28 of flute profile clutch 13 and the double wedge 27 accurate engagements on the right big valve rod 7; Have discharge orifice 21 on big valve plate 25 one side bigger than normal, its area is 5% of big valve plate 25 gross areas; Discharge orifice 21 coincide with little valve plate 20 conical surfaces, forms sealing pair one; Little valve plate 20 is connected with small valve-rod 24 with bearing pin 17 by connecting lever 19, axle sleeve 18; Small valve-rod 24 left ends insert in the axis hole of left axle sleeve 2, are connected with worm gear drive device 14 behind the axis hole of right-hand member by right big valve rod 7; End cap 22 is connected with left side supporting 1 by bolt 23.Worm gear drive device 14 is connected with right supporting 8 by bolt 15.
Drive valve: counterclockwise rotate handwheel 16, drive small valve-rod 24 clockwise directions by worm gear drive device 14 and rotate, open little valve plate 20, simultaneously, gear clutch 13 slowly slides left along the track of location skewed slot 10 under the control of the drive of small valve-rod 24 and locating stud 9; When little valve plate 20 opening angles reach 15 when spending, gear clutch 13 slides left under the effect of spiral compression spring 12 fast, and the recessed tooth 28 of gear clutch 13 meshes fast with the double wedge 27 of right big valve rod 7; At this moment, can suspend the rotation of handwheel 16, allow discharge orifice 21 pressure releases, when treating that pressure is in a basic balance before and after the valve (this moment, big valve plate 25 front and back pressure differences were very little, and friction torque is corresponding to be reduced, and opens lighter), be rotated further handwheel 16, at this moment, big valve plate 25, little valve plate 20 together clockwise direction rotate, until the valve complete opening; At this moment, big valve plate 25 has rotated 90 degree, and little valve plate 20 has rotated 105 degree.
Close valve: clockwise direction rotates handwheel 16, counterclockwise rotates simultaneously by worm gear drive device 14 big valve plates 25 of drive and little valve plate 20, begins to close valve; When closing angle reaches 90 when spending, big valve plate 25 has been closed, and simultaneously, the recessed tooth 28 of gear clutch 13 breaks away from fully with the double wedge 27 of right big valve rod 7; Be rotated further handwheel, close gradually until little valve plate 20; At this moment, valve plate bottom area (big valve plate+little valve plate) is about 10% greater than the top area, and pressure medium helps valve closing tight.
Referring to Fig. 3 and Fig. 4, one end of big valve rod 2 in a left side and right big valve rod 7 inserts respectively in the axis hole of left side supporting 1 on the valve body 26 and right supporting 8, the other end inserts respectively in the left hangers 3 and right hangers 5 of big valve plate 25, is linked to be integral body with big valve plate 25 respectively by left bearing pin 4 and right bearing pin 6; The right-hand member of right big valve rod 7 inserts gear-box 39, and connects with four fan-shaped gear 32 by flat key 33; Gear-box 39 is connected with right supporting 8 by bolt 40, is connected with gear box cover 36 by bolt 38; Gear shaft 31 is connected with second tooth sector 29 with the 3rd tooth sector 42 respectively with flat key 30 by flat key 28, and insert respectively in the axis hole of gear-box 39 and gear box cover 36 at two ends, the left and right sides; Have discharge orifice 21 on big valve plate 25 one side bigger than normal, its area is about 5% of big valve plate 25 gross areas; Discharge orifice 21 coincide with little valve plate 20 conical surfaces, forms sealing pair one; Little valve plate 20 is connected with small valve-rod 24 with bearing pin 17 by connecting lever 19, axle sleeve 18; Small valve-rod 24 left ends insert in the axis hole of left axle sleeve 2, and right-hand member is connected with first tooth sector 34 by flat key 35 after passing the axis hole of right big valve rod 7, and are connected with worm gear drive device 14 by standard claw coupling (summary); Second tooth sector 29 and the 3rd tooth sector 42 respectively with being connected of first tooth sector 34 and four fan-shaped gear 32 transmissions engagement.End cap 22 is connected with left side supporting 1 by bolt 23.Worm gear drive device 14 is connected with gear box cover 36 by bolt 37.
Drive valve: counterclockwise rotate handwheel 16, drive small valve-rod 24 clockwise directions by worm gear drive device 14 and rotate, open little valve plate 20; When little valve plate 20 opening angles reach 15 when spending, first tooth sector 34 is under the drive of small valve-rod 24, beginning and 29 engagements of second tooth sector drive right big valve rod 7 by the 3rd tooth sector 42 and four fan-shaped gear 32 and rotate, and open thereby drive big valve plate 25; At this moment, can suspend the rotation of handwheel 16, allow discharge orifice 21 pressure releases, when treating that pressure is in a basic balance before and after the valve (this moment, big valve plate 25 front and back pressure differences were very little, and friction torque is corresponding to be reduced, and opens lighter), be rotated further handwheel 16, at this moment, big valve plate 25, little valve plate 20 together clockwise direction rotate, until the valve complete opening; At this moment, big valve plate 25 has rotated 90 degree, and little valve plate 24 has rotated 105 degree.
Close valve: clockwise direction rotates handwheel 16, counterclockwise rotates simultaneously by worm gear drive device 14 big valve plates 25 of drive and little valve plate 20, begins to close valve; When closing angle reaches 90 when spending, big valve plate 25 has been closed, and simultaneously, first tooth sector 34 and second tooth sector 29 be disengaging fully; Be rotated further handwheel 16, close gradually until little valve plate 20; At this moment, valve plate bottom area (big valve plate+little valve plate) is about 10% greater than the top area, and pressure medium helps valve closing tight.
Claims (6)
1, a kind of pressure release type butterfly valve, comprise valve body and be installed in the big valve plate on the valve body, big valve rod and driving mechanism, it is characterized in that: on described big valve plate (25), be provided with discharge orifice (21), described big valve rod coaxial package has a small valve-rod (24), on described small valve-rod (24), be provided with the little valve plate (20) corresponding with described discharge orifice (21), described small valve-rod (24) is in transmission connection with described driving mechanism, and described big valve rod is in transmission connection by hysteresis driving mechanism and described small valve-rod (24).
2, pressure release type butterfly valve according to claim 1, it is characterized in that: the end face that described hysteresis driving mechanism is described big valve rod is provided with the annular rack engagement of annular rack and flute profile clutch (13) end face, described flute profile clutch (13) moves axially and is sleeved on the described small valve-rod (24), the cylindrical of described flute profile clutch (13) is provided with location skewed slot (10), cooperates and controls moving axially of described flute profile clutch (13) with locating stud (9) in being fixed in described valve body (26); Spiral compression spring (12) guarantees that the annular rack of described flute profile clutch (13) and the annular rack on the described big valve rod accurately mesh.
3, pressure release type butterfly valve according to claim 1, it is characterized in that: described hysteresis driving mechanism is to be provided with gear-box (39) between described valve body (26) and described driving mechanism, described small valve-rod (24) passes described gear-box (39) and is in transmission connection with described driving mechanism, described small valve-rod (24) is provided with first tooth sector (34), in the described gear-box of the insertion of described big valve rod (39) and be provided with four fan-shaped gear (32), described gear-box (39) is provided with gear shaft (31), and described gear shaft (31) is provided with respectively and is connected with the 3rd tooth sector (42) with second tooth sector (29) of described first tooth sector (34) with four fan-shaped gear (32) transmission engagement.
4, according to claim 1,2 or 3 described pressure release type butterfly valves, it is characterized in that: the area of described discharge orifice (21) is 5% of described big valve plate (25) gross area.
5, according to claim 1,2 or 3 described pressure release type butterfly valves, it is characterized in that: described discharge orifice (21) adopts the conical surface to coincide with described little valve plate (20).
6, according to claim 1,2 or 3 described pressure release type butterfly valves, it is characterized in that: described discharge orifice (21) is located at described big valve plate (25) one side bigger than normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053197 CN200986031Y (en) | 2006-12-22 | 2006-12-22 | Pressure relief type butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053197 CN200986031Y (en) | 2006-12-22 | 2006-12-22 | Pressure relief type butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200986031Y true CN200986031Y (en) | 2007-12-05 |
Family
ID=38915487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620053197 Expired - Fee Related CN200986031Y (en) | 2006-12-22 | 2006-12-22 | Pressure relief type butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200986031Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047431A (en) * | 2011-10-15 | 2013-04-17 | 江苏神通阀门股份有限公司 | Balanced type high-performance butterfly valve |
| CN104613183A (en) * | 2015-02-15 | 2015-05-13 | 江苏神通阀门股份有限公司 | High-pressure butterfly valve |
| CN107740868A (en) * | 2017-11-20 | 2018-02-27 | 郭弘 | A kind of butterfly valve with pre- decompression function |
| CN110230704A (en) * | 2019-06-20 | 2019-09-13 | 武汉百耐流体控制设备有限公司 | A kind of damping butterfly valve |
| CN110630752A (en) * | 2019-09-05 | 2019-12-31 | 李彩华 | Convenient butterfly valve with waterproof function |
| CN111365473A (en) * | 2020-03-26 | 2020-07-03 | 韩国昊 | Low-torque long-service-life butterfly valve |
| CN112032321A (en) * | 2020-09-02 | 2020-12-04 | 冉莉霞 | Butterfly valve for cement meter |
| CN113279750A (en) * | 2020-02-19 | 2021-08-20 | 中国石油天然气股份有限公司 | Oil well sampling pressure-holding prevention device and oil well sampling system |
| CN113775768A (en) * | 2021-09-26 | 2021-12-10 | 上海双高阀门(集团)有限公司 | Lever type butterfly valve |
| CN114215930A (en) * | 2021-12-20 | 2022-03-22 | 海南核电有限公司 | Pipeline valve |
| CN117386825A (en) * | 2023-12-11 | 2024-01-12 | 江苏正良船用附件有限公司 | Low-noise butterfly valve |
-
2006
- 2006-12-22 CN CN 200620053197 patent/CN200986031Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047431A (en) * | 2011-10-15 | 2013-04-17 | 江苏神通阀门股份有限公司 | Balanced type high-performance butterfly valve |
| CN104613183A (en) * | 2015-02-15 | 2015-05-13 | 江苏神通阀门股份有限公司 | High-pressure butterfly valve |
| CN104613183B (en) * | 2015-02-15 | 2017-07-18 | 江苏神通阀门股份有限公司 | A kind of high pressure butterfly valve |
| CN107740868A (en) * | 2017-11-20 | 2018-02-27 | 郭弘 | A kind of butterfly valve with pre- decompression function |
| CN110230704A (en) * | 2019-06-20 | 2019-09-13 | 武汉百耐流体控制设备有限公司 | A kind of damping butterfly valve |
| CN110230704B (en) * | 2019-06-20 | 2024-05-24 | 武汉百耐流体控制设备有限公司 | Damping butterfly valve |
| CN110630752B (en) * | 2019-09-05 | 2021-02-09 | 江苏明江阀业有限公司 | Convenient butterfly valve with waterproof function |
| CN110630752A (en) * | 2019-09-05 | 2019-12-31 | 李彩华 | Convenient butterfly valve with waterproof function |
| CN113279750A (en) * | 2020-02-19 | 2021-08-20 | 中国石油天然气股份有限公司 | Oil well sampling pressure-holding prevention device and oil well sampling system |
| CN111365473A (en) * | 2020-03-26 | 2020-07-03 | 韩国昊 | Low-torque long-service-life butterfly valve |
| CN112032321A (en) * | 2020-09-02 | 2020-12-04 | 冉莉霞 | Butterfly valve for cement meter |
| CN113775768A (en) * | 2021-09-26 | 2021-12-10 | 上海双高阀门(集团)有限公司 | Lever type butterfly valve |
| CN114215930A (en) * | 2021-12-20 | 2022-03-22 | 海南核电有限公司 | Pipeline valve |
| CN114215930B (en) * | 2021-12-20 | 2024-06-11 | 海南核电有限公司 | Pipeline valve |
| CN117386825A (en) * | 2023-12-11 | 2024-01-12 | 江苏正良船用附件有限公司 | Low-noise butterfly valve |
| CN117386825B (en) * | 2023-12-11 | 2024-03-12 | 江苏正良船用附件有限公司 | Low-noise butterfly 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: 20071205 Termination date: 20101222 |