CN2104345U - Double-screw sealing device - Google Patents
Double-screw sealing device Download PDFInfo
- Publication number
- CN2104345U CN2104345U CN 91226522 CN91226522U CN2104345U CN 2104345 U CN2104345 U CN 2104345U CN 91226522 CN91226522 CN 91226522 CN 91226522 U CN91226522 U CN 91226522U CN 2104345 U CN2104345 U CN 2104345U
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- original paper
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- rotatingshaft
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Abstract
The utility model relates to a double-screw sealing device, which mainly solves the problem of the shaft sealing of power-driven equipment for conveying liquid medium. The double-screw sealing device is characterized in that a fixed scroll cover and a rotary scroll cover which are provided with opposite spiral flutes are respectively arranged in an original seal cavity and on a rotary shaft; therefore, the ability that the conveyance medium is driven back to a machine body along the opposite direction of the leaking direction is stronger than that of a single-screw sealing; a non-contact type sealing for the conveyance medium can be realized under the operating conditions of high-temperature and the high-pressure outlet of a machine body. The double-screw sealing device can be widely used for the shaft seal of power-driven equipment for conveying crude oil and other liquid medium.
Description
The utility model belongs to a kind of spiral sealing device, and particularly a kind of shaft sealing when being used for machine fortune equipment and carrying liquid medium is as the double helix seal arrangement on oil transfer pump, water pump and other similar devices.
China's utility model patent " D type oil transfer pump spiral sealing device " (CN90201061.1) discloses spiral sealing device on a kind of D of being used for type (the sectional type single suction is multistage) oil transfer pump.It is to be made of housing, pump shaft, rotary sleeve, quiet cover, quiet cover gland, oil sealing, oil sealing cover and spacer sleeve.Its objective is " contactless " sealing problem that solves D type pump, only being fit to medium is crude oil, inlet pressure 0.2MPa, outlet pressure 4.2MPa, and viscosity is not less than the operating mode of 40MPaS, its deficiency is to be higher than under the operating mode that 4.2MPa viscosity is lower than 4.2MPaS at outlet pressure, then can not use, and can leak oily phenomenon.
The purpose of this utility model is exactly that a kind of " contactless " spiral shell sealing--double helix seal arrangement that is widely used in the machine fortune equipment of various conveying liquid mediums is provided at above-mentioned deficiency.
Technical solution of the present utility model is: a kind of double helix seal arrangement that is used to carry the machine fortune equipment running shaft position of liquid medium comprises original paper Seal cage and the original paper rotatingshaft that is mated.Front end at the original paper Seal cage is connecting a gland by bolt, and the outlet end of this gland is provided with oil sealing, and this oil sealing is in pressing plate is fixed on gland.Be provided with original paper front shaft sleeve and original paper rear axle housing at the two ends of original paper rotatingshaft.Its special way is: connect a rotating screw cover that has with original paper rotatingshaft rotation direction opposite helical groove with flat key on the original paper rotatingshaft.A rotation direction and rotating screw cover are installed in the original paper Seal cage are revolved the mutually opposite fixedly screw-casing spiral groove, that make with nonmetallic material that has, this fixedly screw-casing be fixed in the original paper Seal cage by gland.Spielpassung between rotating screw overlaps and fixedly the spiral shell trip overlaps.
Fixedly screw-casing in the utility model technical solution be adopt that the graphite epoxy resin dipping is made, have and the identical spiral groove parameter of rotating screw cover.
The utility model is owing to be respectively equipped with fixedly screw-casing and rotating screw cover in the original paper Seal cage He on the original paper rotatingshaft, and fixedly screw-casing and rotating screw put and are provided with the opposite spiral groove of rotation direction thereby have the ability that fed sheet of a media toward leakages side in the opposite direction move stronger than single-screw seal arrangement, it can be born transport medium realization " contactless " under high temperature, body outlet high pressure sky condition and seal.Through installing on the 200D-65 under the motoring of 850KW * 10 oil transfer pumps, fed sheet of a media is a crude oil, and outlet pressure reaches 6.3MPa, and the state that temperature is 62 ℃ is test, ne-leakage as a result down.The utility model also can be widely used in the shaft sealer that other various liquid mediums are carried, thereby makes its use field broader.The utility model belongs to " contactless " sealing, thus have that friction is little, simple in structure, advantages such as the little economize on electricity of amount of maintenance behind the one-time investment, joint money, practicality.The transformation and the manufacturing firm that are used in equipment introduce present technique.
Accompanying drawing is a structural representation of the present utility model; And as the specification digest accompanying drawing.
The utility model is described in further detail below in conjunction with accompanying drawing: as shown in the figure, original paper Seal cage 7, original paper rotatingshaft 9, original paper front shaft sleeve 1 and original paper rear axle housing 8 are the original paper at the running shaft position of various machine fortune equipment.Rotating screw cover 6 is to have the spiral groove opposite with original paper rotatingshaft 9 rotation directions, and has keyway, connects its rotating screw cover 6 of realization with flat key and forms the one rotation with original paper rotatingshaft 9.Fixedly screw-casing 5 has that to overlap 6 rotation directions opposite with rotating screw, the spiral groove of parameter identical (simple) for making, and fixedly screw-casing 5 is fixed in the original paper Seal cage 7.Gland 4 is connected with original paper Seal cage 7 usefulness bolts, realizes fixedly fixing of screw-casing 5.Oil sealing 3 is fixed in the gland 4, is connected with gland 4 usefulness bolts by pressing plate 2 and realizes that it fixes, and bolt connects the safety that realized a whole set of sealing and reliable.During design, the part selected materials has nothing in common with each other, and rotating screw cover 6 selects 45 steel heat treatments, and fixedly screw-casing 5 usefulness nonmetallic material are made, and preferably graphite epoxy resin floods, and it is low to have cost, high temperature resistant, anticorrosive advantage; Gland 4 cylinder iron material to keep its stability; Pressing plate 2 usefulness A3 get final product; Oil sealing 3 should be high temperature resistant, erosion-resisting rubber parts.
Claims (2)
1, a kind of double helix seal arrangement that is used to carry the machine fortune equipment running shaft position of liquid medium comprises original paper Seal cage 7 and the original paper rotatingshaft 9 that is mated; Front end at original paper Seal cage 77 is provided with oil sealing 3 by the outlet end that bolt is connecting a gland 4, this gland 4, and this oil sealing 3 is in pressing plate 2 is fixed on gland 4; Be provided with original paper front shaft sleeve 1 and original paper rear axle housing 8 at the two ends of original paper rotatingshaft 9; It is characterized in that: on original paper rotatingshaft 9, connect a rotating screw cover 6 that has with original paper rotatingshaft 9 rotation direction opposite helical grooves with flat key; A rotation direction and rotating screw are installed in original paper Seal cage 7 are overlapped 6 rotation directions fixedly screw-casing 5 opposite and that the spiral groove is arranged, that make with nonmetallic material, fixedly screw-casing 5 is fixed in the original paper Seal cage 7 by gland 4, rotating screw cover 6 and fixing Spielpassung between the screw-casing 5.
2, double helix seal arrangement according to claim 1 is characterized in that: fixedly screw-casing 5 be adopt that the graphite epoxy resin dipping is made, have with rotating screw and overlap 6 identical spiral chute structure parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91226522 CN2104345U (en) | 1991-10-10 | 1991-10-10 | Double-screw sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91226522 CN2104345U (en) | 1991-10-10 | 1991-10-10 | Double-screw sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2104345U true CN2104345U (en) | 1992-05-13 |
Family
ID=4932590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91226522 Granted CN2104345U (en) | 1991-10-10 | 1991-10-10 | Double-screw sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2104345U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100529418C (en) * | 2003-04-29 | 2009-08-19 | 上海鼓风机厂有限公司 | A helium blower fan |
| CN101846171A (en) * | 2010-05-26 | 2010-09-29 | 中信大锰矿业有限责任公司 | Method for preventing oil leakage of worm gear reducer |
| CN101672279B (en) * | 2009-10-17 | 2011-04-13 | 河北裕泰实业集团有限公司 | Single-stage blade pump for dimethyl ether vehicle |
| CN102606517A (en) * | 2011-01-21 | 2012-07-25 | 中国船舶重工集团公司第七〇四研究所 | Inner and outer combined double-spiral seal |
| CN103862587A (en) * | 2014-04-02 | 2014-06-18 | 诸暨市亿霸龙保温材料有限公司 | Anti-leakage internal mixer |
| CN105156033A (en) * | 2015-09-24 | 2015-12-16 | 西南石油大学 | Spiral and reverse spiral combined sealing structure of high-speed roller bit bearing |
-
1991
- 1991-10-10 CN CN 91226522 patent/CN2104345U/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100529418C (en) * | 2003-04-29 | 2009-08-19 | 上海鼓风机厂有限公司 | A helium blower fan |
| CN101672279B (en) * | 2009-10-17 | 2011-04-13 | 河北裕泰实业集团有限公司 | Single-stage blade pump for dimethyl ether vehicle |
| CN101846171A (en) * | 2010-05-26 | 2010-09-29 | 中信大锰矿业有限责任公司 | Method for preventing oil leakage of worm gear reducer |
| CN102606517A (en) * | 2011-01-21 | 2012-07-25 | 中国船舶重工集团公司第七〇四研究所 | Inner and outer combined double-spiral seal |
| CN103862587A (en) * | 2014-04-02 | 2014-06-18 | 诸暨市亿霸龙保温材料有限公司 | Anti-leakage internal mixer |
| CN105156033A (en) * | 2015-09-24 | 2015-12-16 | 西南石油大学 | Spiral and reverse spiral combined sealing structure of high-speed roller bit bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |