CN217735809U - Floating shaft seal for high-temperature environment - Google Patents
Floating shaft seal for high-temperature environment Download PDFInfo
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- CN217735809U CN217735809U CN202221054234.0U CN202221054234U CN217735809U CN 217735809 U CN217735809 U CN 217735809U CN 202221054234 U CN202221054234 U CN 202221054234U CN 217735809 U CN217735809 U CN 217735809U
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- annular
- seal
- shaft seal
- bearing seal
- annular bearing
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Abstract
The utility model discloses a floating shaft seal for high temperature environment, including bearing seal mount pad and the main epaxial annular bearing seal of cover, the inner chamber of bearing seal mount pad is provided with and holds annular bearing seal's annular bearing seal chamber, the internal diameter in annular bearing seal chamber is greater than annular bearing seal's external diameter, the top in annular bearing seal chamber or bottom are provided with restriction annular bearing seal pivoted vertical locating part, annular bearing seal's outer wall be provided with vertical locating part complex vertical spacing groove. When the fan is heated the inflation, the main shaft can upwards float, and annular shaft seal can follow the main shaft and upwards float together for even the high temperature fan is heated the inflation main shaft and takes place the displacement, also can continuously keep encapsulated situation.
Description
Technical Field
The utility model relates to a mechanical ventilation equipment technical field, in particular to bearing seal that floats for high temperature environment.
Background
The centrifugal ventilator is a universal mechanical equipment for air supply or air draft, and can be widely applied to various industries needing air draft and supply. When the fan is heated and expanded, the main shaft position of the fan can move upwards, and if the shaft seal position cannot generate relative displacement according to the position of the main shaft, leakage can be caused, and the efficiency of the fan is influenced.
On the spot, most of high-temperature fans are at about 250 ℃, most of sealing elements in the common floating shaft seal are made of asbestos materials and can meet the requirements, and when the gas temperature reaches 450 ℃, the temperature range exceeds the temperature resistance range of asbestos plates, and the common floating shaft seal cannot be used.
There is therefore a need to provide a floating shaft seal that is resistant to high temperatures to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the aforesaid of prior art not enough and defect, provide a floating shaft seal for high temperature environment to solve above-mentioned problem.
The utility model solves the technical problem that the following technical scheme can be adopted to realize:
the utility model provides a unsteady bearing seal for high temperature environment, includes bearing seal mount pad and the main epaxial annular bearing seal of cover, the inner chamber of bearing seal mount pad is provided with and holds the annular bearing seal chamber of annular bearing seal, the internal diameter in annular bearing seal chamber is greater than the external diameter of annular bearing seal, the top or the bottom in annular bearing seal chamber are provided with restriction annular bearing seal pivoted vertical locating part, the outer wall of annular bearing seal be provided with vertical spacing groove of vertical locating part complex.
In a preferred embodiment of the present invention, the vertical position-limiting member includes a position-limiting bolt having a head portion penetrating through the shaft seal mounting seat and extending into the annular shaft seal cavity.
In a preferred embodiment of the present invention, an auxiliary limiting member is disposed on one side of the top of the annular shaft seal cavity, an auxiliary limiting groove corresponding to the auxiliary limiting member is disposed on the outer wall of the annular shaft seal, and the inner diameter of the auxiliary limiting groove is greater than the outer diameter of the auxiliary limiting member, so that a certain moving space is left between the auxiliary limiting member and the auxiliary limiting groove when the annular shaft seal moves upward.
In a preferred embodiment of the present invention, the auxiliary limiting member includes an auxiliary limiting bolt having a head portion penetrating through the shaft seal mounting seat and extending into the annular mounting cavity.
In a preferred embodiment of the present invention, the shaft seal mounting seat includes a sealing seat fixedly disposed and a gland disposed on the sealing seat, and a shaft hole for the spindle to pass through is disposed in the middle of the sealing seat and the gland.
In a preferred embodiment of the present invention, the sealing seat and the gland are fixed by screws.
In a preferred embodiment of the present invention, a plurality of V-shaped grooves are axially spaced from an inner annular surface of the annular shaft seal corresponding to the outer surface of the spindle.
In a preferred embodiment of the invention, the annular shaft seal is made of an aluminum material.
Due to the adoption of the technical scheme, when the fan is heated and expanded, the main shaft can float upwards, and the annular shaft seal can follow the main shaft to float upwards together, so that the high-temperature fan can continuously keep a sealing state even if the high-temperature fan is heated and expanded and the main shaft moves.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a sectional view B-B of fig. 2.
Detailed Description
In order to make the utility model realize the technical means, creation characteristics, achievement purpose and efficiency are easy to understand and understand, the utility model is further explained below.
Referring to fig. 1 to 3, a floating shaft seal for use in high temperature environment comprises a shaft seal mounting base 100 and an annular shaft seal 200 fitted over a main shaft. The annular shaft seal 200 in this embodiment is made of an aluminum material, has a melting point of about 600 ℃, and is more suitable for high temperatures than a general shaft seal.
The inner cavity of the shaft seal mounting seat 100 is provided with an annular shaft seal cavity 110 for accommodating the annular shaft seal 200, the inner diameter of the annular shaft seal cavity 110 is larger than the outer diameter of the annular shaft seal 200, the top or/and the bottom of the annular shaft seal cavity 110 are/is provided with a vertical limiting member for limiting the rotation of the annular shaft seal 200, and the outer wall of the annular shaft seal 200 is provided with a vertical limiting groove 210 matched with the vertical limiting member. In this embodiment, the top in annular bearing seal chamber 110 is provided with vertical locating part, and vertical locating part includes that the head passes the spacing bolt 111 that stretches into in the annular bearing seal chamber 110 behind the bearing seal mount pad 100, and spacing bolt 111 passes the screw thread counter bore 112 on the bearing seal mount pad 100, and the internal diameter of vertical spacing groove 210 is slightly bigger than the external diameter of spacing bolt 111, so spacing bolt 111 and vertical spacing groove 210 have played the effect of restriction annular bearing seal 200 pivoted, have also played vertical direction guide effect.
The inner annular surface of the annular shaft seal 200 corresponding to the outer surface of the spindle is provided with a plurality of V-shaped grooves 201 at intervals along the axial direction, and when the spindle does not start to drive, the inner annular surface of the annular shaft seal 200 is in interference fit with the outer surface of the spindle. When the main shaft rotates, the limit bolt 111 limits the rotation of the annular shaft seal 200, and the annular shaft seal 200 is made of aluminum material and has a certain deformation amount, so that the annular shaft seal 200 cannot rotate along with the main shaft, and the V-shaped groove 201 on the annular shaft seal 200 has no clearance with the main shaft after running-in, and can play a sealing role. Therefore, when the fan is heated and expanded, the main shaft can float upwards, and the annular shaft seal 200 can float upwards along with the main shaft, so that the high-temperature fan can continuously keep a sealing state even if the main shaft is heated and expanded to displace.
In order to prevent the rotation of the annular shaft seal 200 from being restricted due to the fracture of the limit bolt 111, an auxiliary limit member may be disposed on one side of the top of the annular shaft seal cavity 110, an auxiliary limit groove 220 corresponding to the auxiliary limit member is disposed on the outer wall of the annular shaft seal 200, and the inner diameter of the auxiliary limit groove 220 is greater than the outer diameter of the auxiliary limit member, so that a certain moving space is left between the auxiliary limit member and the auxiliary limit groove 220 when the annular shaft seal 200 moves upward, and the auxiliary limit member and the auxiliary limit groove 220 can limit the rotation of the annular shaft seal 200. The auxiliary limiting member in this embodiment includes an auxiliary limiting bolt 121 whose head portion extends into the annular mounting cavity 110 after passing through the shaft seal mounting seat 100, and the auxiliary limiting bolt 121 passes through a threaded counter bore 122 on the shaft seal mounting seat 100.
The shaft seal mounting base 100 in this embodiment includes a sealing base 130 fixedly disposed on the casing side plate 1 and a gland 140 disposed on the sealing base 130, shaft holes 131, 141 for a spindle to pass through are disposed in the middle of the sealing base 130 and the gland 140, and the sealing base 130 and the gland 140 are fixed by a screw 150. In the assembling mode, the annular shaft seal 200 is assembled on the spindle, then the annular shaft seal 200 is assembled on the sealing seat 130, the annular shaft seal 200 is pressed by the pressing cover 140, the assembling is convenient, and the sealing seat 130 and the pressing cover 140 can also play a role in axially limiting the annular shaft seal 200.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a unsteady bearing seal for high temperature environment, includes bearing seal mount pad and the main epaxial annular bearing seal of cover, the inner chamber of bearing seal mount pad is provided with and holds the annular bearing seal chamber of annular bearing seal, its characterized in that, the internal diameter in annular bearing seal chamber is greater than the external diameter of annular bearing seal, the top or the bottom in annular bearing seal chamber are provided with restriction annular bearing seal pivoted vertical locating part, the outer wall of annular bearing seal be provided with vertical spacing groove of vertical locating part complex.
2. The floating shaft seal for high temperature environments of claim 1 wherein said vertical stop comprises a stop bolt having a head portion that extends into said annular shaft seal cavity after passing through said shaft seal mount.
3. The floating shaft seal according to claim 1, wherein an auxiliary position-limiting member is disposed on one side of the top of the annular shaft seal cavity, an auxiliary position-limiting groove corresponding to the auxiliary position-limiting member is disposed on an outer wall of the annular shaft seal, and an inner diameter of the auxiliary position-limiting groove is larger than an outer diameter of the auxiliary position-limiting member, so that a certain moving space is left between the auxiliary position-limiting member and the auxiliary position-limiting groove when the annular shaft seal moves upward.
4. The floating shaft seal for high temperature environment of claim 3 wherein said secondary stop comprises a secondary stop bolt having a head portion extending through said shaft seal mount into said annular mounting cavity.
5. The floating shaft seal for high temperature environment according to claim 1, wherein the shaft seal mounting seat comprises a sealing seat fixedly disposed and a gland disposed on the sealing seat, and a shaft hole for the main shaft to pass through is disposed in the middle of the sealing seat and the gland.
6. The floating shaft seal for use in high temperature environments of claim 5 wherein said seal carrier and said gland are secured by screws.
7. The floating shaft seal for use in high temperature environments of claim 1 wherein said annular shaft seal has a plurality of V-shaped grooves spaced axially from an inner annular surface of said shaft seal corresponding to said outer surface of said main shaft.
8. The floating shaft seal for a high temperature environment of any one of claims 1 to 7 wherein said annular shaft seal is made of aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221054234.0U CN217735809U (en) | 2022-05-05 | 2022-05-05 | Floating shaft seal for high-temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221054234.0U CN217735809U (en) | 2022-05-05 | 2022-05-05 | Floating shaft seal for high-temperature environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217735809U true CN217735809U (en) | 2022-11-04 |
Family
ID=83817868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221054234.0U Active CN217735809U (en) | 2022-05-05 | 2022-05-05 | Floating shaft seal for high-temperature environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217735809U (en) |
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2022
- 2022-05-05 CN CN202221054234.0U patent/CN217735809U/en active Active
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