CN204004432U - A kind of fluid seal structure for running shaft - Google Patents
A kind of fluid seal structure for running shaft Download PDFInfo
- Publication number
- CN204004432U CN204004432U CN201420452358.3U CN201420452358U CN204004432U CN 204004432 U CN204004432 U CN 204004432U CN 201420452358 U CN201420452358 U CN 201420452358U CN 204004432 U CN204004432 U CN 204004432U
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- China
- Prior art keywords
- running shaft
- circular groove
- groove
- driving structure
- seal structure
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Abstract
For a fluid seal structure for running shaft, it is characterized in that: mainly formed by circular groove, rotary fluid driving structure; Circular groove is arranged on running shaft, the axis of circular groove and the dead in line of running shaft; Rotary fluid driving structure is positioned at circular groove.Described rotary fluid driving structure can be flabellum, can be also groove, can be also convex line.Described rotary fluid driving structure, the footpath of its entity does not exceed the surface of running shaft apicad.In the circumferentia of joining with running shaft surface that described circular groove has, have at least one to be obtuse angle with the face angle on running shaft surface.Other than ring type groove region at running shaft increases by one or more spiral chute, and the spiral chute increasing is communicated with circular groove.Of the present utility model simple in structure, assembling easily, realizes cost low, and the life-span is long.
Description
Technical field
The present invention relates to the structure of running shaft, be specifically related to a kind of fluid seal structure for running shaft.
Background technique
The technology of the existing internal flow leakage that prevents bearing place container, mainly contains mechanical seal, labyrinth sealing, centrifugal force oil-returning structure; The life-span of mechanical seal original paper is short, usually needs to safeguard, is difficult to adapt to the environment of long-time continuous High Rotation Speed; Mazy type has particular requirement to sealing oil used; Centrifugal force oil-returning structure great majority are made up of multiple original papers, assembling trouble.
Summary of the invention
The object of the invention is to propose a kind of fluid seal structure for running shaft for the deficiencies in the prior art, this structure is set directly on running shaft.
The present invention has following technology contents.
Technology contents 1, a kind of fluid seal structure for running shaft, is characterized in that: be mainly made up of circular groove, rotary fluid driving structure; Circular groove is arranged on running shaft, the axis of circular groove and the dead in line of running shaft; Rotary fluid driving structure is positioned at circular groove.
Technology contents 2: a kind of fluid seal structure for running shaft as described in technology contents 1, is characterized in that: described rotary fluid driving structure is flabellum, can be also groove, can be also convex line.
Technology contents 3: a kind of fluid seal structure for running shaft as described in technology contents 1, is characterized in that: described rotary fluid driving structure, the footpath of its entity does not exceed the surface of running shaft apicad.
Technology contents 4: a kind of fluid seal structure for running shaft as described in technology contents 1, is characterized in that: in the circumferentia of joining with running shaft surface that described circular groove has, have at least one to be obtuse angle with the face angle on running shaft surface.
Technology contents 5: a kind of fluid seal structure for running shaft as described in technology contents 1, is characterized in that: the other than ring type groove region at running shaft increases by one or more spiral chute, and the spiral chute increasing is connected with circular groove.
Technology contents explanation and beneficial effect thereof.
Technology contents explanation 1: the technological scheme as described in technology contents 1, its core concept is: circular groove is set on running shaft, this circular groove is equal to the amplification in gap between running shaft and axle sleeve (broad sense) in regional area, form a low pressure area (region of ringless-type groove relatively), in the time that fluid is crossed by the slit flow between running shaft and axle sleeve, can fall in this low pressure area of circular groove, in the acting in conjunction of the driving force of inertial force and fluid drive structure, thereby in the ring-type zone of high pressure (indicating 100 indication regions in as Fig. 5) of causing at circular groove inclined-plane and running shaft surface connecting position, rely on the pressure of the internal flow of the pressure opposing bearing place container of this zone of high pressure, prevent its leakage.Rotary fluid driving structure refers to the structure of utilizing the Fluid Motion Driven By Moving that rotatablely moves, such as the flabellum of fan, and the propeller cavitation of ship, the propeller cavitation of helicopter.
Technology contents explanation 2: as described in technology contents 2, flabellum, groove, convex line are existing rotary fluid driving structure, can play the effect of Fluid Motion Driven By Moving when they rotate, such as fan, the convex line of oil pressure bearing, carrys out the groove of good fortune bearing; Wherein " flabellum " refers to the structure of " obviously have fluid and drive acting surface ", but not refers to separately " tablet when rotation with fluid driving effect ".No matter it is completely engage completely with annular groove wall or leave space for rotary fluid driving structure; need only its energy Fluid Motion Driven By Moving and be positioned at circular groove; all belong to the claimed category of the present invention (such as flabellum has breach in high pressure ring-shaped area, preventing that ring-type zone of high pressure from being cut off by flabellum).
Technology contents explanation 3: " footpath of rotary fluid driving structure entity does not exceed the surface of running shaft apicad " as described in technology contents 3, refer to that all points of rotary fluid driving structure solid object surface are all less than or equal to the distance of running shaft cylinder to rotating shaft axis to the distance of rotating shaft axis, so just the axle of producing after the invention process can be applied directly on old machine without changing original axle sleeve structure, can upgrade to second-hand machine easily.
Technology contents explanation 4: as described in technology contents 4, " in the circumferentia of joining with running shaft surface that circular groove has; having one at least is obtuse angle with the face angle on running shaft surface ", the meaning of this design is better to utilize centrifugal force, is conducive to the formation of high pressure ring-shaped area.
Technology contents explanation 5: the scheme as described in technology contents 5 is the present invention and the combination that carrys out good fortune bearing, the scheme of 4 technology of technology contents with carry out the obvious difference of good fortune bearing and be: the gear oil groove inside of carrying out good fortune bearing does not possess rotary fluid driving structure.
Technology contents explanation 6: know technology contents explanation 1-4 known, the present invention is dynamic sealing technology, need running shaft to rotate and just can reach sealing purpose, in order to adapt to different applications, the present invention can coordinate other sealing techniquies to use, such as: while using seal washer sealing, running shaft motion while making running shaft motionless by design, utilize knot of the present invention to seal, can reduce like this motive sealing gasket wear, extend the motive sealing packing ring life-span on (such as motive sealing conventional O circle, lip circle).
Technology contents explanation 7: know after technology contents explanation 1-5 known, the present invention is a kind of sealing technique, rely on and on running shaft, structure proposed by the invention is set and realizes rotary seal, due to a kind of fluid seal structure for running shaft proposed by the invention, as long as its circular groove is covered, just can play seal action, be construed as " covering the structure outside running shaft " so mention axle sleeve in this specification, and should be limited to usual indication for bearing running shaft rotary axle box.When applying, the present invention can coordinate other load-bearing bearings to use.
Technology contents explanation 8: know after technology contents explanation 1-7 known, when the present invention applies, a kind of fluid seal structure for running shaft that a present invention proposes can be only set on running shaft, also can in the axial direction of running shaft, arrange a kind of fluid seal structure for running shaft that multiple the present invention propose, strengthen motive sealing effect.
Creativeness of the present invention is: the characteristics of motion of using fluid, utilize " rotary fluid driving structure is set in circular groove " this technical characteristics, realize the technique effect of " improving motive sealing effect ", in principle of the present invention, " utilizing circular groove internal rotation type fluid drive structure to produce a ring-type zone of high pressure and prevent fluid leakage ", is that those skilled in the art are difficult to expect.
The invention has the beneficial effects as follows: of the present invention simple in structure, assembling easily, realizes cost low, and the life-span is long.
Brief description of the drawings
Fig. 1 is the schematic diagram of embodiment 1 of the present invention.
Fig. 2 is the sectional drawing of Fig. 1.
Fig. 3 is the schematic diagram that embodiment 1 of the present invention and axle sleeve coordinate.
Fig. 4 is the sealing principle schematic diagram of embodiment 1.
Fig. 5 is the schematic diagram of embodiment 2 of the present invention.
Embodiment
Below in conjunction with accompanying drawing, 1-3 describes the specific embodiment of the present invention.
Embodiment 1, be embodiment 1 of the present invention as Figure 1-3, for the application of the present invention on a rotation axis body, this embodiment has been reused a kind of fluid seal structure for running shaft of multiple the present invention, each 3 up and down, they produce multiple ring-types zone of high pressure towards two different direction of running shaft, clear succinct for view, does not carry out repeat specification to the structure of obvious repetition on schematic diagram.
On running shaft 1, having as shown in Figure 1-2 cross section is trapezoidal circular groove 10, has flabellum 11 in circular groove 10.
Be illustrated in figure 3 the cooperation schematic diagram of running shaft 1 and axle sleeve 2, circular groove 10 is positioned at 2 overlay areas of axle sleeve.For illustrated succinct, clear this figure does not draw its applied environment and supporting structure, these structures are common to those skilled in the art, there is no need to draw.
As Fig. 4 principle schematic that is this embodiment, in the time that fluid is crossed by the slit flow between running shaft 1 and axle sleeve 2, can fall in circular groove 10 these low pressure areas, under the common driving of inertial force and flabellum 11,10 fluid can be along the circumferentia 12(cross section geometric figure hypotenuse place face of circular groove in circular groove) move towards running shaft cylinder, thereby cause the ring-type zone of high pressure 100 of at circular groove 11 inclined-planes and the surperficial connecting position of running shaft 1 place, the axis of this ring-type zone of high pressure 100 is straight line and overlaps with rotating shaft axis; Between the circumferentia 12 that circular groove 10 has and the surface 14 of running shaft 1, angle 13 is obtuse angle.
Embodiment 2, as shown in Figure 5, on running shaft 3, there is a kind of fluid seal structure for running shaft of the present invention, on its circular groove inclined-plane, there are bending convex line 31, bent groove 32, bending convex line 31 the same as embodiment 1 and bent groove 32 all have fluid-operated ability in the time rotating with running shaft 3, and they belong to rotary fluid driving structure.
Embodiment 3, the enterprising row equivalent conversion on the basis of embodiment 2, by convex line 31 and groove 32, replace with the spiral convex line of wall scroll, and the spiral grooves of wall scroll.
Embodiment 4, on the basis of embodiment 1, will reduce the quantity of structure of the present invention, the quantity of a kind of fluid seal structure for running shaft that the present invention is proposed is reduced to 1.
Embodiment 5, on the basis of embodiment 1, increase a spiral chute on running shaft surface, and spiral chute communicated with circular groove 10.
Embodiment 6, on the basis of embodiment 1, increase many parallel spiral chutes on running shaft surface, and spiral chute communicated with circular groove 10.The concept of parallel spiral groove is with reference to parallel curves.
Claims (5)
1. for a fluid seal structure for running shaft, it is characterized in that: mainly formed by circular groove, rotary fluid driving structure; Circular groove is arranged on running shaft, the axis of circular groove and the dead in line of running shaft; Rotary fluid driving structure is positioned at circular groove.
2. a kind of fluid seal structure for running shaft as claimed in claim 1, is characterized in that: described rotary fluid driving structure can be flabellum, can be also groove, can be also convex line.
3. a kind of fluid seal structure for running shaft as claimed in claim 1, is characterized in that: described rotary fluid driving structure, the footpath of its entity does not exceed the surface of running shaft apicad.
4. a kind of fluid seal structure for running shaft as claimed in claim 1, is characterized in that: in the circumferentia of joining with running shaft surface that described circular groove has, have at least one to be obtuse angle with the face angle on running shaft surface.
5. a kind of fluid seal structure for running shaft as claimed in claim 1, is characterized in that: the other than ring type groove region at running shaft increases by one or more spiral chute, and the spiral chute increasing is communicated with circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452358.3U CN204004432U (en) | 2014-08-12 | 2014-08-12 | A kind of fluid seal structure for running shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420452358.3U CN204004432U (en) | 2014-08-12 | 2014-08-12 | A kind of fluid seal structure for running shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004432U true CN204004432U (en) | 2014-12-10 |
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ID=52044435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420452358.3U Expired - Fee Related CN204004432U (en) | 2014-08-12 | 2014-08-12 | A kind of fluid seal structure for running shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004432U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333154A (en) * | 2014-08-12 | 2016-02-17 | 刘伟 | Fluid sealing structure for rotating shaft |
-
2014
- 2014-08-12 CN CN201420452358.3U patent/CN204004432U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333154A (en) * | 2014-08-12 | 2016-02-17 | 刘伟 | Fluid sealing structure for rotating shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20190812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |