CN201326744Y - Rotary sealing device - Google Patents
Rotary sealing device Download PDFInfo
- Publication number
- CN201326744Y CN201326744Y CNU2008202149148U CN200820214914U CN201326744Y CN 201326744 Y CN201326744 Y CN 201326744Y CN U2008202149148 U CNU2008202149148 U CN U2008202149148U CN 200820214914 U CN200820214914 U CN 200820214914U CN 201326744 Y CN201326744 Y CN 201326744Y
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- China
- Prior art keywords
- ring
- sealing device
- axle journal
- permanent magnet
- annular compensation
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- 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 - Lifetime
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a rotary sealing device. The rotary sealing device comprises a static ring arranged on a penetrating cover and a dynamic ring arranged on a shaft neck; wherein in the static ring, holes for installing permanent magnets are uniformly distributed in a static ring main body, and the permanent magnets are arranged in the holes; the dynamic ring comprises a bidirectional ring-shaped compensating body, one side of the bidirectional ring-shaped compensating body is a sealing ring, and the other side is an iron check ring; the bidirectional ring-shaped compensating body together with the static ring main body forms a dynamic sealing strip by the sealing ring, and a static sealing strip is formed between the bidirectional ring-shaped compensating body and the shaft neck. The rotary sealing device has the advantages that: the structure is compact, and the installation is convenient; as the static sealing strip exists between the bidirectional ring-shaped compensating body and the shaft neck, the compensating body has axial float compensating capacity; the uniformly-distributed permanent magnets installation holes are beneficial for adjusting magnetic force; a blind hole with a thread is arranged at one end of each permanent magnet, so that the permanent magnet can be more convenient to be taken out; a plurality of mazes are arranged at the position of the static ring main body close to the shaft neck, which improves the sealing effect.
Description
Technical field
The utility model relates to a kind of rotating sealing device, especially a kind of rotating sealing device based on magnetic force.
Background technique
In the rotating equipments such as industrial gear-box, speed reducer, pump, blower fan, steam turbine, motor, oil leak not only influences the proper functioning of these equipment, reduce their working life, and caused the severe contamination of environment, the more important thing is in some occasion, in chemical industry, the leakage of lubricant oil can cause serious security incident, for many years, in rotating equipment, the general rubber oil seas that adopt of running shaft prevent leakage of oil more.Require higher casing then to design or design according to the form that exoskeletal oil sealing adds outside framework oil seal is installed according to the form that two import outside framework oil seals are installed.This outside framework oil seal has simple in structure, and compactness is cheap, characteristics easy for installation.But because the direct contact friction of outside framework oil seal and axle journal place, outside framework oil seal requires than higher the surface accuracy at axle journal place.When surface accuracy does not reach requirement, will cause wearing and tearing to oil sealing, cause outside framework oil seal to lose the function of oil sealing, in addition, outside framework oil seal also can cause certain wearing and tearing to axle journal simultaneously.For these reasons, outside framework oil seal generally only is applicable to rotational speed≤20m/s, and the working environment of pressure≤0.05MPa uses down.
Along with the progress and development of science and technology, make that this traditional rubber and plastic oil sealing is difficult in and continues to satisfy the harsh day by day working environment and the specific (special) requirements in market in the future to the also progressively raising of requirement of mechanical rotary seal.Oil leak not only influences the proper functioning of equipment, reduces the working life of equipment, and has caused the severe contamination of environment, the more important thing is that in some occasion in chemical industry, the leakage of lubricant oil can cause serious security incident.If but use traditional mechanical oil sealing, though can solve problems such as leakage of oil and life-span, its complex structure costs an arm and a leg and safeguards loaded down with trivial detailsly, and the manufacturing of rotating machinery and maintenance cost are risen.
Well-known magnetic sealing device is to develop from mechanical seal device, and it is crucial to be the face pressure of motive sealing face, the face pressure selection whether rationally directly have influence on sealing effect.Different Environmental Conditions is also different to the requirement of face pressure, as: different rotational speeies, to the degree that requires of leakage rate, the pressure of sealed medium, external environment condition pressure etc.The adjustability of magnetic force like this, it is very important that convenience just becomes.
External some seal arrangements that emerged based on magnetic force.They generally are placed on magnet on the rotating ring that graphite is installed, because both sides all are the materials that can produce magnetic force, so the single magnetic level of magnet employing nanometer magnetic material, involve great expense, and magnetic force is fixed; Adopt the O type circle on the rotating ring on axle journal, to move the mode that compensates simultaneously by magnetic force.This is high to the axle journal requirement on machining accuracy, and axle journal is crossed senior general and caused O type circle not move, thereby can not compensate, and motive sealing face lost efficacy, and axle journal is crossed the young pathbreaker and caused O type circle and the leakage of oil of axle journal cooperation place.Aspect installation, there is not the positioning table terrace on the axle journal, from our factory use condition and China's actual conditions, this mode also may not be certain to embody the easy installation and reliable advantage that they bragged about.
Summary of the invention
The purpose of this utility model is: the surface accuracy at the rubber oil sea axle journal place that exists in the rotating equipment requires only to be applicable to lower rotational speed than lacking in higher, working life; Machinery oil seal structure complexity, cost an arm and a leg, safeguard loaded down with trivial details; The external single magnetic level of nanometer magnetic material based on the magnetic sealing device use, involve great expense, magnetic force is non-adjustable, adopt O type circle to compensate the axle journal requirement on machining accuracy high, operating condition for rotating machinery requires also to compare a series of problems such as harshness, and a kind of brand-new adjustable rotating sealing device with double seal effect is provided.
The purpose of this utility model is achieved in that a kind of rotating sealing device, comprise and be installed in the stationary ring that covers and be installed in rotating ring on the axle journal, it is characterized in that: stationary ring comprises stationary ring body and permanent magnet, be evenly distributed with the hole of mounting permanent magnet in the stationary ring body, permanent magnet places the hole; Rotating ring comprises the two-way annular compensation body that is installed on the axle journal, and a side of bidirectional compensating body is a seal ring, and opposite side is iron back-up ring; Two-way annular compensation body forms the static seal band by forming the motive sealing band between seal ring and stationary ring body between two-way annular compensation body and axle journal, forms the static seal band between stationary ring body and saturating lid.
In the utility model: the cross section of described two-way annular compensation body is
Shape, wherein, vertical elevation is docked with described seal ring and iron back-up ring respectively, and horizontal plane places axle journal.
In the utility model: described seal ring is copper sealing ring or carbon seal ring.
In the utility model: described two-way annular compensation body vertical elevation both sides are provided with seal ring locating slot and iron back-up ring locating slot relatively, and seal ring embeds behind the locating slot and forms the motive sealing band between the stationary ring body, and iron back-up ring embeds in the iron back-up ring locating slot; The middle part of horizontal plane and axle journal surface of contact cooperates formation twice static seal band for the fold buffering compensating basin of suspension, two-way annular compensation body by fold buffering both sides, compensating basin with axle journal.
In the utility model: the vertical surface of two-way annular compensation body and the intersection of horizontal plane are provided with dashpot.
In the utility model: described two-way annular compensation body adopts elastic rubber material to make.
In the utility model: an end of axle journal is provided with positioning step, and two-way annular compensation body one end face is resisted against positioning step.
In the utility model: the hole that is evenly distributed with mounting permanent magnet in the stationary ring body is a circular hole, and permanent magnet is and the cylindrical body of hole coupling that the one side of permanent magnet is provided with the blind hole that contains screw thread.
In the utility model: stationary ring body and axle journal contacting point are provided with the multiple tracks labyrinth.
Advantage of the present utility model is: the rotating sealing device compact structure, and easy for installation.Because copper sealing ring embeds behind the locating slot of two-way annular compensation body and forms motive sealing face between the stationary ring body, and only has a motive sealing face, has increased reliability; Two-way annular compensation body cushions the compensating basin by fold, makes the rotating ring and the diameter of axle both have the static seal band, has the compensation ability of axial float again, even the bigger situation of the error of perpendicularity occurs the axis and saturating the lid between the end face of the diameter of axle, also can correctly compensate; Since there is not relative movement between the two-way annular compensation body and the diameter of axle, therefore extremely low to diameter of axle processing request; The even distribution of permanent magnet can conveniently be adjusted the magnetic force size; Permanent magnet one end is provided with the blind hole that contains screw thread, and it is more convenient that permanent magnet is taken out; The stationary ring body is provided with the multiple tracks labyrinth near the axle journal place.This seal arrangement effectively utilize material and space make the reliability of sealing many one heavily ensure.
Description of drawings
Fig. 1 is an example structure schematic representation of the present utility model;
Fig. 2 is the schematic representation of the two-way annular compensation body that relates to of the present utility model;
Fig. 3 is the E-E cross section structure schematic representation of Fig. 2.
Among the figure: 1, saturating lid, 2, the stationary ring body, 3, permanent magnet, 4, axle journal, 5, two-way annular compensation body, 6, iron back-up ring, 7, seal ring, 8, the seal ring locating slot, 9, iron back-up ring locating slot, 10, fold buffering compensating basin.
A, static seal band, B, motive sealing band, C, static seal band, D, static seal band.
Embodiment
Accompanying drawing discloses the utility model embodiment's concrete structure without limitation, and the utility model will be further described below in conjunction with accompanying drawing.
As seen from Figure 1, rotating sealing device comprises and is installed in the stationary ring that covers on 1 and is installed in rotating ring on the axle journal 4, wherein: stationary ring comprises stationary ring body 2 and permanent magnet 3, is evenly distributed with the hole of mounting permanent magnet 3 in stationary ring body 2, and permanent magnet 3 places the hole; Rotating ring comprises the two-way annular compensation body 5 that is installed on the axle journal 4, and a side of bidirectional compensating body 5 is a seal ring 7, and opposite side is iron back-up ring 6.In the present embodiment, the cross section of two-way annular compensation body 5 is
Shape, seal ring 7 adopts copper sealing ring, simultaneously, axle journal 4 is provided with positioning step, and two-way annular compensation body 5 is resisted against positioning step, form static seal band C between one end face of two-way annular compensation body 5 and the sidewall of positioning step, two-way annular compensation body 5 forms motive sealing band B by 2 of seal ring 7 and stationary ring bodies, and two-way annular compensation body 5 and 4 formation of axle journal static seal band A cover 1 and 2 formation of stationary ring body static seal band D thoroughly, simultaneously, stationary ring body 2 is provided with labyrinth, four roads with axle journal 4 contacting points.
During concrete enforcement, circular hole can be adopted in the hole that is evenly distributed with mounting permanent magnet 3 in the stationary ring body 2, and permanent magnet 3 adopts the cylindrical body with the hole coupling, and an end of permanent magnet 3 is provided with the blind hole that contains screw thread.
By Fig. 2 Fig. 3 as seen, two-way annular compensation body 5 is an annular solid, and its cross section is
Shape, in the present embodiment, the vertical surface both sides in cross section are provided with seal ring locating slot 8 and iron back-up ring locating slot 9 relatively, the middle part of the horizontal plane in cross section and axle journal surface of contact cooperates formation two seals band A (referring to Fig. 1) for the fold buffering compensating basin 10 of suspension, two-way annular compensation body 5 by fold buffering 10 both sides, compensating basin with axle journal 4 slight interference.
During concrete enforcement, described seal ring 7 can adopt copper sealing ring or carbon seal ring, and two-way annular compensation body 5 can adopt elastic rubber material to make.
In the use, seal ring 7 embeds copper sealing ring locating slot 8 backs and 2 of stationary ring bodies form close moving envelope band B, and iron back-up ring 6 embeds in the iron back-up ring locating slot 9.Simultaneously, can be by the screw thread of permanent magnet 3 one ends, in stationary ring body 2, pack in the equally distributed hole or take out permanent magnet 3, change suction to iron back-up ring 6, regulate the pressure of 2 of seal ring 7 and stationary ring bodies, to reach different occasions (as: different rotational speed, the degree that requires to leakage rate, the pressure of sealed medium, external environment condition pressure etc.) use different pressures to guarantee that this seal arrangement is operated under the best face pressure state, thereby reach efficient, reliable, long lifetime.
Claims (9)
1, a kind of rotating sealing device comprises being installed in the stationary ring that covers and being installed in rotating ring on the axle journal that it is characterized in that: stationary ring comprises stationary ring body and permanent magnet, is evenly distributed with the hole of mounting permanent magnet in the stationary ring body, and permanent magnet places the hole; Rotating ring comprises the two-way annular compensation body that is installed on the axle journal, and a side of bidirectional compensating body is a seal ring, and opposite side is iron back-up ring; Two-way annular compensation body forms the static seal band by forming the motive sealing band between seal ring and stationary ring body between two-way annular compensation body and axle journal, forms the static seal band between stationary ring body and saturating lid.
2, rotating sealing device according to claim 1 is characterized in that: the cross section of described two-way annular compensation body is
Shape, wherein, vertical elevation is docked with described seal ring and iron back-up ring respectively, and horizontal plane places axle journal.
3, rotating sealing device according to claim 1 and 2 is characterized in that: described seal ring is copper sealing ring or carbon seal ring.
4, rotating sealing device according to claim 2, it is characterized in that: described two-way annular compensation body vertical elevation both sides are provided with seal ring locating slot and iron back-up ring locating slot relatively, seal ring embeds behind the locating slot and forms the motive sealing band between the stationary ring body, and iron back-up ring embeds in the iron back-up ring locating slot; The middle part of horizontal plane and axle journal surface of contact cooperates formation twice static seal band for the fold buffering compensating basin of suspension, two-way annular compensation body by fold buffering both sides, compensating basin with axle journal.
5, according to claim 2 or 4 described rotating sealing device, it is characterized in that: the vertical surface of two-way annular compensation body and the intersection of horizontal plane are provided with dashpot.
6, rotating sealing device according to claim 5 is characterized in that: described two-way annular compensation body adopts elastic rubber material to make.
7, rotating sealing device according to claim 6 is characterized in that: an end of axle journal is provided with positioning step, and an end face of two-way annular compensation body is resisted against positioning step.
8, rotating sealing device according to claim 1 is characterized in that: the hole that is evenly distributed with mounting permanent magnet in the stationary ring body is a circular hole, and permanent magnet is and the cylindrical body of hole coupling that the one side of permanent magnet is provided with the blind hole that contains screw thread.
9, rotating sealing device according to claim 1 is characterized in that: stationary ring body and axle journal contacting point are provided with the multiple tracks labyrinth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202149148U CN201326744Y (en) | 2008-12-25 | 2008-12-25 | Rotary sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202149148U CN201326744Y (en) | 2008-12-25 | 2008-12-25 | Rotary sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201326744Y true CN201326744Y (en) | 2009-10-14 |
Family
ID=41178717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202149148U Expired - Lifetime CN201326744Y (en) | 2008-12-25 | 2008-12-25 | Rotary sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201326744Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128626A (en) * | 2013-03-07 | 2013-06-05 | 苏州朗高电机有限公司 | Dynamic sealing structure of rotary shaft |
| CN103234051A (en) * | 2013-04-14 | 2013-08-07 | 丹东克隆集团有限责任公司 | Magnetic force type water seal mechanism for pump |
| CN104279331A (en) * | 2014-03-12 | 2015-01-14 | 赵忠波 | Oil seal mechanism |
| CN106195279A (en) * | 2016-09-12 | 2016-12-07 | 新疆广汇中化能源技术开发有限公司 | Rotatable radiation bed |
| CN109899523A (en) * | 2019-04-11 | 2019-06-18 | 深圳市魔技科技有限公司 | A kind of non-revolved body sealing lip rotary seal structure |
-
2008
- 2008-12-25 CN CNU2008202149148U patent/CN201326744Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128626A (en) * | 2013-03-07 | 2013-06-05 | 苏州朗高电机有限公司 | Dynamic sealing structure of rotary shaft |
| CN103234051A (en) * | 2013-04-14 | 2013-08-07 | 丹东克隆集团有限责任公司 | Magnetic force type water seal mechanism for pump |
| CN104279331A (en) * | 2014-03-12 | 2015-01-14 | 赵忠波 | Oil seal mechanism |
| CN106195279A (en) * | 2016-09-12 | 2016-12-07 | 新疆广汇中化能源技术开发有限公司 | Rotatable radiation bed |
| CN106195279B (en) * | 2016-09-12 | 2024-04-26 | 新疆广汇煤炭清洁炼化有限责任公司 | Rotary radiation bed |
| CN109899523A (en) * | 2019-04-11 | 2019-06-18 | 深圳市魔技科技有限公司 | A kind of non-revolved body sealing lip rotary seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091014 Effective date of abandoning: 20081225 |