CN203258061U - Multi-ring sealing element - Google Patents
Multi-ring sealing element Download PDFInfo
- Publication number
- CN203258061U CN203258061U CN 201320166893 CN201320166893U CN203258061U CN 203258061 U CN203258061 U CN 203258061U CN 201320166893 CN201320166893 CN 201320166893 CN 201320166893 U CN201320166893 U CN 201320166893U CN 203258061 U CN203258061 U CN 203258061U
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- Prior art keywords
- main shaft
- sealed case
- gland
- sealing
- ring
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Abstract
The utility model discloses a multi-ring sealing element which comprises a main shaft, a seal box, a gland and sealing fillers. A plurality of flow blocking rings are arranged on the periphery of the main shaft, and a portion, provided with the flow blocking rings, outside the main shaft is sleeved with the seal box. The sealing fillers are filled between the seal box and the main shaft, and the sealing fillers is pressed upward in the axial direction of the main shaft through the gland arranged on the end portion of the seal box. The flow blocking rings are annular grooves or annular embossments, the sections of the flow blocking rings in the axis directions of the flow blocking rings are in a semicircular shape or a quadrangle shape, the distances between every two adjacent flow blocking rings can be either the same or different, the depths of the grooves can be either the same or different, the heights of the embossments can be either the same or different. According to the multi-ring sealing element, materials can be prevented from transversely permeating on the outer wall of the main shaft through the flow blocking rings on the main shaft, meanwhile, the sealing fillers are made to be more tightly connected with the main shaft, and sealing performance is improved. In addition, the seal box and the gland are connected through bolts and tightly pressed through springs, the position of the gland can be adjusted in a self-adaptive mode, and the gland is made to tightly press the sealing fillers all the time.
Description
Technical field
The utility model relates to the mechanical seal device in the field of automobile, boats and ships, chemical industry, light textile, relates in particular to a kind of many annular seals.
Background technique
Mechanical sealing element belongs to one of comparatively complicated machine foundation element of precision, structure, is the critical component of the equipment such as various pump classes, reaction synthesis reactor, turbocompressor, submersible motor.Depend on many factors in its sealability and working life, such as the precision of type selecting, machine, correct install and use etc.
Mechanical seal refers to kept under the effect of hydrodynamic pressure and compensation mechanism elastic force (or magnetic force) and under the cooperation of auxiliary seal fitting and relative sliding and the device that prevents fluid leakage that consists of perpendicular to the end face of spin axis by at least one pair of.
As shown in Figure 1, traditional Sealing comprises the first main shaft 1, the first sealed case 2, the first gland 4 and the first sealing stuffing 3, described the first sealed case 2 is an annulus, described the first sealed case 2 is sheathed on outside the first main shaft 1, fill by described sealing stuffing 3 in the space that described the first main shaft 1 and the first sealed case are 2, and the described sealed case 2 one ends sealing the other end compresses by the first gland 4.
The Sealing sealing effect of this structure is not obvious, and its material simultaneously, when the first sealing stuffing corrosion, needs the manual tune bolt easily by the infiltration of the first spindle outer wall, adjusts the position of the first gland.
Summary of the invention
The purpose of this utility model is to provide a kind of many annular seals that improve sealing effect.
To achieve these goals, many annular seals that the utility model provides comprise: main shaft, sealed case, gland and sealing stuffing, main shaft periphery is provided with the multiple tracks block ring, sealed case is sheathed on outside the main shaft, the block ring place, fill by the sealing stuffing between sealed case and main shaft, the sealing stuffing compresses by the gland of being located at the sealed case end on main shaft is axial, block ring is annular groove or annular protrusion, block ring is semicircle or quadrilateral along the section of its axial direction, adjacent two rings of choked flow will distance equate or does not wait all can, the degree of depth of each annular groove or the height of each annular protrusion are equal or do not wait and all can.Thus, by the block ring of annular groove or annular protrusion shape is set at main shaft, prevent that material from passing through the infiltration of main shaft wall, simultaneously, it is tightr that the sealing stuffing is connected with main shaft on perpendicular to the main-shaft axis direction, in addition, and when sealing the stuffing corrosion, regulate the position of gland, the press seal stuffing.
In some embodiments, block ring is annular groove, annular groove bi-side and main-shaft axis out of plumb, and the bi-side true dip direction is consistent, and the annular groove side is relative with the malleation direction with acute angle in its bottom surface angle of cut, and its acute angle place is provided with chamfering.Thus, when block ring is annular groove, chamfering is set at the angle of cut place sealing stuffing is fully contacted with the annular groove inwall, avoid angle of cut place to form the space, improved its sealability.
In some embodiments, sealed case is annulus, is provided with cavity filling between sealed case and main shaft, and the positive pressure side inwall of sealed case and spindle outer wall fit tightly, and the other end is by gland seal.Thus, the sealing stuffing pushes by gland, is convenient to regulate, make the sealing stuffing tightly the filling main shaft and the gap between sealed case, improved sealability.
In some embodiments, the end end face that sealed case links to each other with gland, be parallel to its axial direction and be provided with a plurality of the first screws, a plurality of the first screws evenly distribute, gland is provided with the first through hole in the first screw corresponding position, is provided with in addition the bolt that the one and first screw is complementary, and bolt passes the first through hole and is threaded with the first screw, be provided with spring between the bolt head of gland and bolt, spring is in compressive state.Thus, be bolted sealed case and gland, in addition, according to active force and reaction principle, by spring force extruding gland, after the sealing stuffing was corroded, self adaption was regulated the position of gland, makes all the time compression seal stuffing of gland.
In some embodiments, the sealing stuffing forms for many ring collar-pecker material close-packed arrays, and a ring sealing stuffing of its end is that PTFE is made.Thus, improved sealability.
In some embodiments, main shaft is step-like along the section of its axial direction, the multiple tracks block ring is positioned at the less end of main shaft external diameter, and near its step surface place, the end that the positive pressure side of sealed case and main shaft external diameter are larger fits tightly, and the ring that the sealing stuffing is adjacent with the fast headstock terrace is made for PTFE.Thus.Make sealing stuffing compacting, tight, prevent that more effectively material from permeating along the main shaft wall.
In some embodiments, sealed case is an integral ring-shaped sleeve, or is the annulus that two and half sleeves are formed by connecting.As required, select the sealed case that is suitable for installing.
Description of drawings
Fig. 1 is the sectional view of the Sealing of prior art;
Fig. 2 is the sectional view of many annular seals of a kind of mode of execution of the utility model;
Fig. 3 is the structural representation of A part in many annular seals shown in Figure 2;
Fig. 4 is the sectional view of many annular seals of the another kind of mode of execution of the utility model.
Embodiment
Come the utility model is described in further detail explanation below in conjunction with drawings and the specific embodiments.
To shown in Figure 4, many annular seals of the present utility model comprise such as Fig. 2: main shaft 10, sealed case 20, gland 30 and sealing stuffing 40.Main shaft 10 is cylindrical or for step-like cylindrical body, and described gland 30 can be face to face gland or two-sided gland.
Embodiment 1:
Fig. 2 and Fig. 3 have schematically shown the many annular seals according to a kind of mode of execution of the utility model.
As shown in the figure, many annular seals of the present utility model comprise: main shaft 10, sealed case 20, gland 30 and sealing stuffing 40.In this mode of execution of the present utility model, sealed case 20 is an integral ring-shaped sleeve, main shaft 10 be an end external diameter less than the step-like cylindrical body of its other end external diameter, the end that its external diameter is larger is main shaft first end 102, be positive pressure side, the end that external diameter is less is main shaft the second end 103.
As shown in the figure, in the step surface place of main shaft the second end 103 near main shaft first end 102 and main shaft the second end 103, periphery is provided with multiple tracks block ring 101, the quantity of block ring 101 is decided according to the length of sealed case 20, in this mode of execution of the present utility model, block ring 101 is three roads, and is annular groove, and the distance between three road block rings, 101 adjacent twice equates.The shape of groove is indefinite, and that its section can be is trapezoidal, semicircle, parallelogram etc., and the degree of depth of annular groove can equate also can not wait, and in this mode of execution of the present utility model, the section of annular groove is parallelogram, the deep equality of annular groove.The annular groove side is relative with the malleation direction with acute angle in its bottom surface angle of cut, and its acute angle place is provided with chamfering 104.
The sealed case 20 of annulus shape is sheathed on main shaft 10 outer, block ring 101 places, and itself and main shaft will form a cavity filling, and its sealing stuffing 40 is filled in the cavity filling.
The internal diameter of sealed case first end 201 ends of sealed case 20 and main shaft first end 102 external diameter equal and opposite in directions, the internal diameter of sealed case the second end 202 ends of sealed case 20 is greater than main shaft first end 102 external diameters size.Sealed case 20 is sheathed on sealing stuffing 40 when outer, its sealed case first end 201 inwalls and main shaft 10 first ends 102 close contacts, the internal diameter of gland 30 and main shaft the second end 103 equal and opposite in directions.The step surface of the step surface of the sealed case first end 201 of sealed case 20 and sealed case the second end 202 and main shaft first end 102 and main shaft the second end 103 is positioned at same plane, and this plane is separating surface 105.Gland 30 be installed with in sealed case 20 sealed case the second end 202, it is tight to seal stuffing 40 compactings.
In this mode of execution of the present utility model, sealing stuffing 40 is ptfe ring and ceramic fiber kernmantle, and ring packing stuffing 40 tightly is coated on the outerface of spindle, the equal and opposite in direction of the external diameter of ring packing stuffing 40 and sealed case 20 external diameter biggest places.A plurality of sealing stuffing 40 are closely adjoint, are sheathed on main shaft 10 and are provided with groove shape block ring 101 parts.Sealing stuffing 40 is ptfe ring with the ring that separating surface 105 intersects.
As shown in the figure, gland 30 is stepped along the section of its axis, comprises stuffing compressed part 301 and sealed case compressed part 302.The internal diameter equal and opposite in direction of sealed case the second end 202 ends of the external diameter of its stuffing compressed part 301 and sealed case 20, the external diameter of sealed case compressed part 302 is greater than the external diameter size of sealed case the second end 202 ends of sealed case 20, gland 30 main shaft 10 axially on press seal stuffing 40, and its stuffing compressed part 301 is arranged in the sealed case 20, the space 33 that sealed case second end 202 of joint sealing compressed part 302 and sealed case 20 will be kept somewhere certain distance.
As shown in the figure, sealed case 20 sealed case the second end 202 end faces be parallel to its axial direction and be provided with four each and every one the first screws 2021, four the first screws 2021 evenly distribute, the sealed case compressed part 302 of gland 30 is provided with the first through hole 3021 in the first screw 2021 corresponding positions, be provided with in addition the bolt 11 that the one and first screw 2021 is complementary, bolt 11 passes the first through hole 3021 and is threaded with the first screw 2021.111 of the bolt heads of gland 30 and bolt 11 are provided with spring 22, and spring 22 is in compressive state.
Many annular seals of the present utility model, by main shaft the second end at the stepped shape main shaft groove type block ring is set, prevents that material from permeating at spindle outer wall, simultaneously, the sealing stuffing is connected on perpendicular to the main-shaft axis direction closelyr with main shaft with making, has improved sealability; In addition, be bolted sealed case and gland, and adopt spring compression, according to active force and reaction principle, by spring force extruding gland, self adaption is regulated the position of gland, makes all the time compression seal stuffing of gland.
Embodiment 2:
Fig. 4 has schematically shown the many annular seals according to the another kind of mode of execution of the utility model.
As shown in Figure 4, many annular seals of the present utility model comprise: main shaft 110, sealed case 120, gland 130 and sealing stuffing 140.In this mode of execution of the present utility model, sealed case 120 is the sleeve that two and half sleeves are formed by connecting, and main shaft is a cylindrical body.
As shown in the figure, main shaft 110 peripheries are provided with multiple tracks block ring 1101, the quantity of block ring 1101 is decided according to the length of sealed case 120, in this mode of execution of the present utility model, block ring 1101 is three roads, and be annular protrusion, the distance between three road block rings, 1101 adjacent twice is unequal, and the height of projection of annular protrusion equates.The shape of projection is indefinite, and its section can be quadrilateral, semicircle etc., and in this mode of execution of the present utility model, its section is trapezoidal.
As shown in the figure, two and half sleeve-shaped sealed case pieces 1200 are located in from main shaft 110 both sides and seal outside the stuffing 140, and fix by fixing bolt, make two sealed case pieces 1200 be combined into a sleeve-shaped sealed case 120.
The internal diameter of sealed case first end 1201 ends of sealed case 120 and main shaft 110 external diameter equal and opposite in directions, the internal diameter of sealed case the second end 1202 ends of sealed case 120 is greater than main shaft 110 external diameters size.Sealed case 120 is sheathed on sealing stuffing 140 when outer, its sealed case first end 1201 inwalls and main shaft 110 close contacts, the internal diameter of gland 130 and main shaft 110 external diameter equal and opposite in directions, gland 130 be installed with in sealed case 120 sealed case the second end 1202, it is tight to seal stuffing 140 compactings.
In this mode of execution of the present utility model, sealing stuffing 140 is ptfe ring or ceramic fiber kernmantle, can certainly be other sealing materials, ring packing stuffing 140 tightly is coated on the outerface of spindle, the equal and opposite in direction of the external diameter of ring packing stuffing 140 and sealed case 120 external diameter biggest places.A plurality of sealing stuffing 140 are closely adjoint, are sheathed on main shaft 110 and are provided with groove shape block ring 1101 parts.
As shown in the figure, gland 130 is stepped along the section of its axis, comprises stuffing compressed part 1301 and sealed case compressed part 1302.The internal diameter equal and opposite in direction of sealed case the second end 1202 ends of the external diameter of its stuffing compressed part 1301 and sealed case 120, the external diameter of sealed case compressed part 1302 is greater than the external diameter size of sealed case the second end 1202 ends of sealed case 120, gland 130 main shaft 110 axially on press seal stuffing 140, and its stuffing compressed part 1301 is arranged in the sealed case 120, the space 133 that sealed case second end 1202 of joint sealing compressed part 1302 and sealed case 120 will be kept somewhere certain distance.
As shown in the figure, sealed case 120 sealed case the second end 1202 end faces be parallel to its axial direction and be provided with four each and every one the first screws 2022, four the first screws 2022 evenly distribute, the sealed case compressed part 1302 of gland 130 is provided with the first through hole 3022 in the first screw 2022 corresponding positions, be provided with in addition the bolt 111 that the one and first screw 2022 is complementary, bolt 111 passes the first through hole 3022 and is threaded with the first screw 2022.1111 of the bolt heads of gland 130 and bolt 111 are provided with spring 122, and spring 122 is in compressive state.
Many annular seals of the present utility model by convex shape block ring is set at main shaft, prevent that material from permeating at spindle outer wall, and simultaneously, the sealing stuffing is connected on perpendicular to the main-shaft axis direction closelyr with main shaft with making, has improved sealability; In addition, be bolted sealed case and gland, and adopt spring compression, according to active force and reaction principle, by spring force extruding gland, self adaption is regulated the position of gland, makes all the time compression seal stuffing of gland.
Claims (7)
1. many annular seals, it is characterized in that, comprise: main shaft (10), sealed case (20), gland (30) and sealing stuffing (40), described main shaft (10) periphery is provided with multiple tracks block ring (101), described sealed case (20) is sheathed on outside the described main shaft (10), block ring (101) is located, fill by sealing stuffing (40) between described sealed case (20) and main shaft (10), described sealing stuffing (40) is axially upper by being located at gland (30) compression of sealed case (20) end at main shaft (10), described block ring (101) is annular groove or annular protrusion, described block ring (101) is semicircle or quadrilateral along the section of its axial direction, adjacent two rings of described block ring (101) will distance equate or does not wait all can, the degree of depth of described each annular groove or the height of each annular protrusion are equal or do not wait and all can.
2. many annular seals according to claim 1, it is characterized in that, described block ring (101) is annular groove, described annular groove bi-side and described main-shaft axis out of plumb, and the bi-side true dip direction is consistent, described annular groove side is relative with the malleation direction with acute angle in its bottom surface angle of cut, and its acute angle place is provided with chamfering (104).
3. many annular seals according to claim 1 and 2, it is characterized in that, described sealed case (20) is annulus, be provided with cavity filling between described sealed case (20) and described main shaft (10), the positive pressure side inwall of described sealed case (20) and described main shaft (10) outer wall fit tightly, and the other end is by described gland (30) sealing.
4. many annular seals according to claim 3, it is characterized in that, the end end face that described sealed case (20) links to each other with described gland (30), be parallel to its axial direction and be provided with a plurality of the first screws (2021), a plurality of the first screws (2021) evenly distribute, described gland (30) is provided with the first through hole (3021) in the first screw (2021) corresponding position, be provided with in addition a bolt (11) that is complementary with described the first screw (2021), described bolt (11) passes described the first through hole (3021) and is threaded with described the first screw (2021), be provided with spring (22) between the bolt head (111) of described gland (30) and described bolt (11), described spring (22) is in compressive state.
5. many annular seals according to claim 4 is characterized in that, described sealing stuffing (40) forms for many ring collar-pecker material close-packed arrays, and a ring sealing stuffing (40) of its end is ptfe ring.
6. many annular seals according to claim 5, it is characterized in that, described main shaft (10) is step-like along the section of its axial direction, described multiple tracks block ring (101) is positioned at the less end of described main shaft external diameter, and near its step surface place, the end that the positive pressure side of described sealed case (20) and described main shaft (10) external diameter are larger fits tightly, and the ring that described sealing stuffing (40) is adjacent with described fast headstock terrace is made for PTFE.
7. according to claim 5 or 6 described many annular seals, it is characterized in that described sealed case is an integral ring-shaped sleeve, or be the annulus that two and half sleeves are formed by connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166893 CN203258061U (en) | 2013-04-07 | 2013-04-07 | Multi-ring sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166893 CN203258061U (en) | 2013-04-07 | 2013-04-07 | Multi-ring sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203258061U true CN203258061U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320166893 Expired - Fee Related CN203258061U (en) | 2013-04-07 | 2013-04-07 | Multi-ring sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203258061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174833A (en) * | 2013-04-07 | 2013-06-26 | 如皋市权盛机械制造有限公司 | Multiple-ring sealing element |
| CN109073085A (en) * | 2017-02-16 | 2018-12-21 | Nok株式会社 | sealing material |
-
2013
- 2013-04-07 CN CN 201320166893 patent/CN203258061U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174833A (en) * | 2013-04-07 | 2013-06-26 | 如皋市权盛机械制造有限公司 | Multiple-ring sealing element |
| CN103174833B (en) * | 2013-04-07 | 2016-01-13 | 如皋市权盛机械制造有限公司 | Many annular seals |
| CN109073085A (en) * | 2017-02-16 | 2018-12-21 | Nok株式会社 | sealing material |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20160407 |